• Koh Tao First Diving Center since 1987 aerial picture
  • Koh Tao Diving courses in Thailand
  • Koh Tao Diving center team
  • SSI Diving Instructor training courses on Koh Tao Thailand
  • technical diving courses on Koh Tao Thailand

Dive courses


Koh Tao Divers 

Shaping divers for


So many

Happy divers


  • "Amazing facility, amazing people. The guys are real professionals and really funny in the same time also which makes everything perfect. Super flexible and amazingly helpful. Highly recommend them to anyone who wants to do any type of dives from recreational up to tech dives around the island." - Tovari

  • "I did with Koh Tao Divers half-day refreshing course, night dive and 7 fun dives. All members off staff are nice, helpful, relaxed, happy to guide you and also very safety orientated. I have dived with 10+ dive operators in 5 continents and this one was definently number one so far."

KTD - Koh Tao Divers since 1987

Scuba diving experiences on Koh Tao, Thailand

Koh Tao Divers, also known as KTD, is the first scuba diving center on Koh Tao, established in 1987. KTD is known for our experienced instructors, relaxed vibe and amazing diving. KTD is Finnish owned and run, but our international and multilingual team offers diving courses also in English, Italian and Danish just to name few.

At KTD you will find the full range of diving courses starting from beginner courses all the way to dive professional level and technical diving. We’re affiliated with Scuba Schools International "SSI" and proudly boast the Diamond Instructor Training Resort rating. In technical diving we offer both SSI Extended Range and TDI courses

SSI Diamond Instructor Training resort on Koh Tao Thailand

For beginners

Take a peek under the surface! Entry-level courses introduce you to a new world.

Professional level

Dive for a living! The SSI professional level course prepare you for a career in diving.

Scuba dive trips in Asia and Koh Tao

Dive trips

Discover the brilliant reefs and exciting wrecks on Koh Tao or join our special dive trips around Asia.

Continue your education

Specialty courses give you the opportunity to dive deeper into specialised topics!

Technical diving

Life starts at 45 m! When recreational diving is just not enough, our tech courses give you the experience and knowledge you need to execute more challenging dives.

KTD Beach Dorm - Accommondation for divers

The four-bed beach bungalow was fully renovated in July 2017 to offer cheap accommodation for divers.

We also dive in beautiful Malta!

We also dive in beautiful Malta - website coming soon!

Meet the crew of

Dive professionals


The master of disaster, primus motor, puzzle-solver, manager. Makes things happen at the shop.

Teaching languages
Teaching in Finnish Teaching in English

Instructor trainer, extreme sportsman, takes care of the DMTs and other professional level candidates while hiding behind facial hair.

Teaching languages
Teaching in Finnish Teaching in English

The boat master and long time dive instructor, the one with the loud motorbike.

Teaching languages
Teaching in Finnish Teaching in English Teaching in Thai

Fuzzy blonde hair, gets the divers diving and office work done. Signature phrase: “All righty!”

Teaching languages
Teaching in Finnish Teaching in English

One of the few instructors who can stand up straight on the lower deck of MV Sinking. Thinks diving is in the top three of things to do while awake.

Teaching languages
Teaching in Finnish Teaching in English Teaching in Swedish

Our resident Italian will gently introduce you to the wonderful world of diving, always with a smile.

Teaching languages
Teaching in Italian Teaching in English

Makes sure you have air in your tanks and a smooth ride to to the divesites.

Teaching in English
" The boat is really good, schedule covers a wide variety of the best sites, they have good equipment but what makes this diveshop stand out is the atmosphere that I haven't experienced elsewhere in Koh Tao. The fun dives are literally fun dives. I have never felt so relaxed diving, being encouraged and enjoying myself. Everyone working at KTD goes the extra mile to make sure all customer wishes and needs are accommodated. When on board I felt like being part of the crew, fully involved in discussions about the dives, about the marine life and this created an environment where it was just so easy to bond with the other divers as well. I had 13 fun dives with KTD, namely with Giorgio, Tom, Pauliina, Eeva & Antti who were all excellent, knowledgeable and super fun and really hope I can go back again soon. And of course the cherry on top was the Sail Rock excursion where I could swim with a baby whale shark!"
Alexandra 05/2017

Working closely with ...

Give us a shout

Office hours 9.30-19.30

Tel. +66 77 457 085
Mob. +66 86 06 99244
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Photo credits to Fat Fish Movies, Anna Kekkonen, Irena Stangierska, Fredrik Lindblad and Mikko Paasi

Copyright 1987 - 2017 Koh Tao Divers. All rights reserved.
TAT license #34/01497