TDI
Last updated September 7, 2026
Technical Diving International is the technical-diving sister agency to SDI (recreational), and one of the most widely used technical certification bodies worldwide. Its catalog runs from nitrox and decompression procedures through trimix, cave, wreck, sidemount, and CCR diving, each with its own diver and instructor tiers.
Tec Courses Offered by TDI
Advanced NitroxAdvanced TrimixDecompression ProceduresExtended RangeIntro to TechNon-Diving Specialty InstructorTDI HelitroxTDI Technical DivemasterTDI Trimix 75Technical DPVTechnical RescueTrimixAdvanced Mixed Gas CCRAir Diluent CCRAir Diluent CCR Decompression ProceduresHelitrox CCRHelitrox CCR Decompression ProceduresMixed Gas CCRSemi-Closed RebreatherSemi-Closed Rebreather Diver (Azmuth)Semi-Closed Rebreather Diver (Dolphin)Semi-Closed Rebreather Diver (Ray)Semi-Closed Rebreather Diver (Submatix ST100)Cave DecompressionCave Surveying DiverCavernDPV CaveFull CaveIntro to CaveRebreather Cavern DiverRebreather Full CaveRebreather Intro to Cave DiverSump DiverSump Diver InstructorTDI Advanced Cave SidemountTDI Cave SidemountTDI Stage CaveTDI Technical Underwater Cave SurveyingTDI Underwater Cave SurveyingAdvanced WreckMine Diving Level 1Mine Diving Level 2Rebreather Mine DiverAdvanced Nitrox Instructor TrainerAdvanced Trimix Instructor TrainerDecompression Procedures Instructor TrainerExtended Range Instructor TrainerIntro to Tech Instructor TrainerTDI Helitrox Instructor TrainerTDI Instructor Trainer CourseTechnical DPV Instructor TrainerAir Diluent CCR Decompression Procedures Instructor TrainerAir Diluent CCR Instructor TrainerCavern EvaluatorDPV Cave Instructor TrainerFull Cave EvaluatorIntro to Cave EvaluatorRebreather Full Cave Instructor TrainerTDI Cave Sidemount Instructor TrainerAdvanced Wreck Instructor TrainerMine Diving EvaluatorDPV DiverTDI Advanced SidemountTDI SidemountTDI Sidemount Instructor TrainerTDI Stage SidemountAdvanced Gas BlenderAdvanced Gas BlendingAdvanced Gas Blending Instructor TrainerChamber OperatorChamber Operator InstructorCompressor OperatorCompressor Operator InstructorEDGE/HOG Equipment Service ClinicEDGE/HOG Equipment Service Clinic InstructorEDGE/HOG Equipment Service Clinic Instructor TrainerEquipment O2 Service TechNitrox Gas BlendingNitrox Gas Blending Instructor TrainerO'Dive Doppler TechnicianO'Dive Doppler Technician InstructorO2 Service TechnicianO2 Service Technician Instructor TrainerTDI Booster Operator
Instructors Certified by TDI
United States
Alejandro Dutto
Alfieri Montes De Oca
Anthony Flaris
Barry Allen
Barry Shively
Benjamin Carpenter
Bobby Sullivan
Brian Kelley
Cameron Mahaffey
Chris Brock
Chris Leavitt
Daniel Mahnke
Dene Ulmschneider
Dominic Black
Edd Sorenson
Frank Slifka
Gerald Carroll
Glenn Van Vliet
Gregory Murphy
James Blackman
James Gadomski
Jason Gulley
Javier Pedreros Ratmiroff
Jeffrey Dobbertien
Jeffrey Knapp
Jennifer Dillaman
Jesse Pogue
John Chatterton
John McCain
Jose Mir
Joseph Bosquez
Joseph Seda
Josh Dillaman
Justin Newton
Kevin Tate
Lauren Wilson
Mark Derrick
Mark Sommer
Martin Merz
Maxim Kuznetsov
Mehdi Zinetti
Michal Turek
Paul Okishev
Peter Kibler
Rick Murcar
Shawn Robotka
Timothy Senkevich
Michael Pizzio
Paul Seldes
Steven Dalcher
Tim Perrault
Tom Witmer
Alex Blevins
Alexander Jones
Benjamin Hadfield
Benjamin Lair
Bill Oestreich
Brennan Autry
Brian Carney
Brian Shreve
Bryan Skiba-Crafts
Buck Buchanan
Carsten Huppertz
Daniel Dawson
David Houser
Denise Byrne
Harry Averill
Howard Thompson
Jack Barroso
James Draker
James Weber
Jeff Loflin
Jiawen Zhou
John Bentley
John Conway
Jorge Flores
Justin Judd
Ken Sallot
Lamar Hires
Landon Lasseter
Mark Fowler
Mark Nevin
Melanie Clark
Michael Thornton
Mike Ange
Mike Cleary
Monty Graham
Peter Friedman
Peter McCumber
Renee Power
Robert Blevins
Robert McGann
Robert Meadows
Scott Davenport
Scott Evans
Thomas Johnson
Timothy Young
William Hardman
Mexico
Alain Pocobelli
Alberto Salvini
Alejandra García Sánchez
Alejandro Alvarez
Alessandra Figari
Antonio Ceballos
Arja Hintsala
Arthur Nguyen Kim
Bruno Espinosa
Camilo Garcia
Candy Lopez Castillejos
Carlos Cardiel
Carlos Colin Rubio
Carlos Mendicuti Ortega
Cathy Sytsma
Christian Sansoni
Christine Loew
Cristian Selun
Cécilie Reynet
Daniel Gonzalez Cardona
Daniel Ortega
David Mayor
Demian Gonzalez
Diego Medina
Eduardo Rodriguez Correa
Eduardo Vazquez
Elliot Smith
Emilio Gutierrez
Erik Rosenstein
Ernesto Hevia del Puerto
Fabien Dupont
Fernando Enrique Valencia Cetina
Fernando Lopez Rejon
Fernando Paulin
Francisco Lopez
Gabriela Del Nero
Geraldine Solignac
Gustavo Buenrostro
Gustavo Fragoso
Gustavo Padilla
Harry Gust
Hugo De la Llata
Isabel Domínguez Pérez
Jesus Moo Mex
Jonathan Magallon Labrada
Jose Fernandez Zermeño
Jose Mastache Villalobos
Juan Cardona
Juan Carrillo
Julio Gregori Martinez
Keila Kasai
Kim Davidsson
Lanny Vogel
Lilia Cabrera Gallaga
Luis Leal
Luis Martinez Lopez
Luis Sanchez
Malgorzata Pytel
Marc Green
Marcel Taubert
Marcelin Nebenhaus
Marissa Eckert
Martin Ramirez
Massimo Ardizzoni
Mauro Bordignon
Michael Bransfield
Michel Vazquez Robles
Natalie Gibb
Nicolas Casella
Octavio Del Rio
Olinka Cortes
Pablo Serrano
Pascual Segui Miñana
Paulo Antonio Sandoval Ramirez
Peter Broger
Phil Bunyard
Pierre Antoine Martin Mourgues
Ricardo Castillo
Robert Schmittner
Roger Williams
Sabine Sidi-Ali
Saul Ramirez Barba
Sean Brand
Sebastian Fischer
Sergiy Malyy
Skanda Coffield-Feith
Tamara Adame
Thibault Blanc
Vicente Fito Dahne
Vicente Rubin
Victoria Cole
Vincent Rouquette-Cathala
Wojciech Kujawa
Steve Crosby
Mark Ehlich
Egypt
Abd El Moumen Nabata
Abdel Rahman O. El Mekkawi
Adeeb Husary
Ahmed Abd Alhamed
Ahmed Aziz
Ahmed Elghannam
Ahmed Fadel
Ahmed Gabr
Ahmed H. Al-Zawawy
Ahmed Hussien
Ahmed Kamal
Ahmed M. Elbana
Ahmed Magdy
Ahmed Mohamed El Halawany
Ahmed Naguib
Ahmed Rashad
Ahmed Saad
Ahmed Salah Nabata
Ahmed Shaban
Ahmed T. Elshnawy
Ahmed Zaky
Alex Heyes
Alfred Harvey
Ali Mohammed Samir
ALIAKSANDR MARUK
Amar Zakaria
Amr El Hawary
Amr Kamel
Amr Mohamed
Andreas Sueess
Mohamed Osman
Mohamed Saeed
Mohamed Shams
Mohamed Zaki
Mostafa Hesham
Niko Ismael
Noha Mandour
Olga Khrennikova
Omar Derbala
Pavel Sidorenko
Ramy Magdy
Andrew Auckland
Andrew G. Amin
Andriy Matusevich
Haitham Afifi
Hassan Abdou
Hazem Salloum
Hesham Tawakol
Hossam Elawamry
Jenny Lord
Kerstin Olbrich
Mahmoud Askar
Mahmoud Elghannam
Anna-Maria Vanwynsberghe
Antoine VANDENKERCKHOVE
Anton Cherkasov-Nisman
Antonio Bresciani
Arthur Zaloga
Ashraf Mansour
Bakr Madany
Balazs Orban
Christina Ewerhardy
Duncan Spenceley
Elsayed Elsayed Ibrahim Elsayed
Mohamed Hassan Salem Hosni
Mohamed Leheta
Mohamed Mady
FABIAN CZIKAI VASILE DANUT
Mahmoud Nagaty
Marc Buttex
Matthias Breit
May H. Saleh
Menna Allah Ibrahim
Mohamad Shamala
Mohamed Abd El Latif Ali
Mohamed Abo Rohim
Mohamed Eissa Mohamed
Mohamed H El-Maraghy
Mohamed Hamouda
Zakaria El-Sayed Zakaria
Sameh Sokar
SAMIR ELSEGINY
Sherif Khairat
Stephane Lecat
Tamer Hussein
Tamer Hussien
Tamer Seleem
Tarek Elshamy
Thomas Habeck
Vladimir Tochilov
Waleed Al Dib
Youstina Youssef
Philippines
Andrew Couch
Beili Zhou
DONGNAN BAI
HANG JU LEE
JORDAN BRYAN ANG DY PAY
Kim Rohrer
Michael Taylor
Rick Kirkham
Xavier Mendiolagaray
KWANG OH KIM
Miguel Zulueta
Roberto Manas
YANFENG GAO
Andy LIM Santos
Dong Jun Kim
Gunter Bernert
Jonathan Venn
Kyung Hyuk Kwon
Naomi Allen
Oscar Pico
Ronny Oliwka
Yangfan Wei
Bing Ning
DU XIAO CHUAN
Husheng Wang
Jong Moon Lee
Josephus Dimaunahan
Li Zhi Min
Nicholas Greenop
Pablo Baldinger
Ruby Yipaerguli
Yao Kang Cen
Cancheng Wu
Efren Robrigado
Irwin Lacnit
Karl Hurwood
Marco Chen
Paul Whitehead
SHAO CHAO LIU
Carlo Torralba
ERICSON PAUL YEE
James Hardwick
Katia Chen
Ye Lu
Maria Bella De Castro
Peng Fan
Shaun Notley
Yinzhong Hu
Charles Cox
Gabriel Rioux
Jamie Cox
Mark Cox
CHRISTOPHER Constantino
Gary Tyson
Jea Chul Kang
Philip Jennings
Tamara May
Yu Yong
Mark Leonard Carreon
Phillip Clark Badar
Tim Blömeke
Yuehua Liu
Daniel Holmstedt
George Ang Dy Pay
Jericho Ang Dy Pay
Matt Reed
Qing Zhao
Tsz fung Ip
Yung Jin Choi
David Collett
Gino Pelayo
JIARONG DING
Matti Lampinen
Reuven Cohen
Woong Yun
Zhang Xi wen
Alain Carolus
DI WANG
Glenn Delos Santos
Jonathan Vallar
Indonesia
Rob Thomas
Yannick Antoine
Chris Gamlin
Antoine Martin
Simon Liddiard
Will Goodman
Soon Fuat Chong
Phillip Christoff
Marc Crane
Brendon Allen
Martin Slisans
Meng Chao
Clemence Le Flohic Gueguen
Adi Haliem
Ayub Polii
Henoch Kindangen
La Ode Halimuddin
Maulana Nurhadi
Pete Hamerton
Rinto Ariyadi
Sudiar Subu
Alex Neoh
Ary Kodung
Christian Gloor
Dani Moreno Marcos
Ebram Harimurti
Hannah Normala
Hardiansyah Putra
Jake Langford
Jelizaveta Jones
Kevin Tirtawinata
Lorenz Mader
Ramon van Santen
Tomas Borkovec
Lea Perz
Michael Jones
Min Soo Jung
Tias Nugraha
Nicholas Badgero
Simon Moore
Siodin Kho
Akshay Milind Gargatte
Thailand
Mikko Paasi
Mika Lindström
Claus Rasmussen
Andy Campbell
Vsevolod "Seva" Korobov
Benoit Capitaine
Jeffrey Glenn
Parasu "Por" Komaradat
Bunthorn "Bunny" Saowan
Maurizio Carmini
Norrased "Benz" Palasing
Pichit Muangnapoe ("Kru Berm")
Sornwit Sinlaparat
Vincent "Vin" Moy
Kevin Black
Jirayu Rojanakerati
Phutthakhun Prungkananon
Siwat Worachananant
Daren Marshall
Jildou Bijlsma
PENG HE
Sakchai Padoongrotwit
Andreas Maier
Douglas Docherty
Marc Duncan
Polphut Bualoi
Thanannat Jirawattanakitja
Zachary Benge
Brandon McCarter
Erik Bosten-Stenman
Matias Carvacho
Rittichai Chamhan
Troy Jamieson
Yann Thibaudeau
Daranet Padoongrotwit
Jean Michel RINN
Panya Klaying
Ruengrit Changkwanyuen
Vorapat Pariyawong
Malta
Abigail Borg
Adel George Hallak
Alan Whitehead
Audrey Cudel
Brian Azzopardi
Chris Godlewski
Christopher Dennis
Damian Xuereb
David Morgan
Dominika Szabó
Dora Farkas
Graham Powell
Gregor Rentmeister
Jack Thompson
Jacques Bernard
Joseph Phillips
Karsten Schneiderwind
Lawrence Spagnol
Lee Smallwood Cassar
Lewis Sell
Luciano Ellul
Marinus Goosen
Mark Shilling
Matt Bannon
Max Lewis
Samuel Norton
Sascha Stingl
SIMON SCIBERRAS
Stephen McElhone
Stephen Phillips
Thomas Louvradoux
Tom Steiner
Vas Proud
Yvonne Press
Michael Tandy
Michael Umnov
Nadine-Hani Al-Manqour Garrido
Other locations
Dive Centres with TDI Instructors
Mexico
Zona de Buceo
Yucatek Divers
Cave Explorations
Cave Training Mexico
Mexico Cave Diving
Playa Diving Center
Martin Cave Training
Polish Corner
ActunProTulum
Underworld Tulum
Elite Divers International
Adventure Tours Yucatán
DiveMex
Dive Instructor Phil
DeepDiveMexico
Deep Dark Diving
Cenote Cave Diving
Sabine Technical Diving
Pasku Dive
Diving Caves
Hidden Worlds Diving
Squalo Divers
CDT Mexico (Cave Diving Training)
Explorer Divers
Cave Diving Adventures
Beyond Diving
Puerto Aventuras Water Sports
Cenotexperience
Deep Bubbles
Dive with Cristina
Cenote Tours
Pepe Dive Center
Mx Scuba
Tulum Diving Center
Gregori Diving
Acuatic Tulum
Agua Clara Diving Tulum
Dive Mike
Planet Scuba Mexico
Blue Life
Pepe Nando Divers
Diversity Diving
Pluto Dive
Diverscommunity (Escuela de Buceo)
Xpu Ha Divers
Zero Gravity Dive Center Mexico
Infinity2Diving
APE Divers Academy
Scuba Tulum
Protec Mexico
DiveX
Cardumen Diving
Darkside Divers
GoDiveMEX
Yucatán Dive Center
Go Dive Mexico
Divers UnderGround
Cave Diving By Jonathan
Solid Crew Scuba Diving Center
Xibalba Dive Center
Rango Extendido (Rango Diving)
Dive Guru
Cave World
Under The Jungle
Triton Diving
Cozumel Ocean Research
Only Dive
XOC-Ha
Green Divers Tulum
United States
Sidemount Underground
Aquatic Obsessions
Pura Vida Divers
Florida Keys Dive Center
Miami Technical Diving
Dayo North
Reel Fun Diving
Dayo Scuba Center
Brock Technical
Hydrotherapy Dive Charters
Earth Immersion
Divers Direct
Down Deep Diving LLC
CaveMax
Stuart Scuba
Bird's Underwater
Divers Supply Jacksonville
Bluewater Diving
Force-E Scuba Centers
Dive Educators
Florida Springs Scuba
Captain Hook's Dive Center
Evolved Diving
Cave Country Dive Shop
Blue Descent Diving
Mahaffey's Diving
Dive911
Panama City Diving
Trident Dive, Inc
Scott's Scuba Service
Spring Run Diving
Beyond the Reef, LLC
Florida Technical Diving
Lake City Dive Center
Uncle Cal's Dive Club
Police Fire Dive Instruction
Florida Underwater Sports
Jupiter Dive Center
Snapper Scuba
North Florida Cave Training
Narcosis Scuba
Diving Between Worlds
Cave Adventurers
Below 130 Diving
Blue Grotto Dive Resort
Horizon Divers
Genesis Diving Institute
Dive Gainesville
Horizontal Divers LLC
World of Scuba
Dive With Rob
Dive Gear Express
Nevin Scuba
Adventure Outfitters Dive Center
Scuba Techie
Gypsy Divers
Philippines
MDI Diveshop
Aqua Dive Coron
Capt’n Gregg’s Dive Resort
Blue Ribbon Dive Resort
Evolution Diving Resort
Nemodive Resort
Sea Dive Resort
Team Hammerhead Zamboanga
Amigos Dive Center
Club Hari Dive Resort
Dive Dojo
Boardwalk Dive Center
Side-Effects Dive Resort
Tech Asia
E & Z Diving Center
Cebu Fun Divers
Frontier Tech Divers
Discovery Divers Coron
Scubaholics Subic
Protech Philippines
Dauin Tech Divers
Moalboal Dive Center
Mango Dive
Dive Right
Romblon Fun Divers
Dive Subculture Technical
Thresher Shark Divers
Atmosphere Resorts & Spa
Oceanplayer
Dive Like A Ninja
Black Deep Tech
Dive X Scuba Resort
Egypt
Lagona Divers Technical Diving
Aqua Sharm Diving College
Eazy Divers
Scuba Seekers
H2O Divers Dahab
SlyDive
Liquid Adventures
Mirage Divers Dahab
C-Forum MenaDive
Shams Hotel & Dive Centre
Double Wing Tek
Poseidon Divers Dahab
Bubbles Team Dahab
Blue Ocean Dive Dahab
Red Sea Diving Safari — Marsa Shagra
Circle Divers Tec & CCR Sharm
Dive Mania
Freedom Divers Safaga
Penguin Divers Club
Werner Lau Sharm El Sheikh
X Deep Immersion
Dahab Tec Divers
Diving Attitude
Infinite CCR
Fun Divers Dahab
Planet Divers Dahab
Reef Oasis Dive Club
Thailand
NTC Dive
Krabi Scuba Club (by BB Marine)
Khaolak Dive Resort
Phuket Scuba Club (by BB Marine)
Yes-in Dive
N9BO (Global Underwater Services)
Koh Tao Divers
Seascout Diving
Bangkok SCUBA Academy
Scandinavian Chang Diving Center
BB Marine (Bangkok HQ)
Ocean Zone Divers
GoPro Asia / Bans Technical Diving
Thai Ocean Academy (Pattaya)
Thai Ocean Academy (Koh Chang)
DiveMate Scuba Club
Dive & Co. Extreme
TEC Pattaya
All Star Dive Academy
ACDC Diving
Pattaya Scuba Club (by BB Marine)
Big Blue Tech
Koh Kho Khao Diving
Tech Dive Asia
Indonesia
PDSI (Professional Dive Services Indonesia)
Sailendivers
Black Water Tek
Wailino Dive
Ocean Dive League
Blue Marlin Tech
Wakatobi Dive Resort
Bunaken Oasis Dive Resort & Spa
Sanctum Exploration
Bali Dive Trek
Prana Dive
Manta Dive
Scubatec Academy
Sea Pearl Dive Center
Air Dive Alor
TekDeep Asia
Trawangan Dive
Two Fish Divers
Laguna Gili Dive Center
Whale Dive Centre
RocknRoll Divers
Gili Divers
Dive Attitude
Malta
Diver by Design
7R Diving
TechWise Malta
Maltaqua
Dark Horizon Diving
Black & White Diving
DiveShack Malta
Audrey Cudel Technical
Atlantis Diving Centre Gozo
Sidemount Society
Gozo Dive — St Andrew's Divers Cove
Scubatech Diving Centre Malta
Divewise
Blue Waters Dive Cove
Seashell Dive Centre
Dive Systems Malta
Gozo Technical Diving
Technical Diving Training
We're still building out the directory country by country, so this list isn't every TDI instructor or dive centre in the world — more locations are coming soon.