International Association of Nitrox and Technical Divers

International Association of Nitrox Divers, IAND, was formed in 1985 in response to the needs of the diving public. Up until that time, mixed gas diving and the use of decompression gasses was limited, in a formal way, to military and commercial divers.

In 1985, Dick Ruthkowski, retired as the dive supervisor for the National Oceanographic and Atmospheric Administration, NOAA, and, together with other leaders in the diving community, formed IAND. Dick’s goal was to introduce the benefits of using Nitrox in many diving situations and to begin teaching safe decompression diving.

In 1991, under the leadership of Tom Mount, the organization grew into the leading technical training organization in the world, offering courses covering all aspects of sport diving. At the same time, the name was changed to the International Association of Nitrox and Technical Divers, IANTD, to better reflect the organization’s additional emphasis technical diving.

Today, IANTD has offices in over twenty five countries and instructors in more than 60 countries.

Train divers is what IANTD does best!


Whatever you want to do - whether you're completely new to diving and would like to explore the world's tropical reefs or you're an experienced diver wanting to discover the silent world of rebreather diving or the majesty of underwater caves - IANTD can get you there. Our diver training programs offer a means of diving more safely and in more environments - whatever your level and interests...



  • Pioneers

IANTD was founded by the pioneers of technical and scientific diving!

  • First to Teach EANx

In 1985 IANTD introduced the use of Nitrox mixtures for sport diving 10 years earlier than others! 

  • First to Teach Trimix

 IANTD was the first to teach diving with Trimix!

  • First to Teach Open Water Sidemount

 The Side Mount Diving was introduced by IANTD to sport diving in open water in 2006, six years ahead everybody else!

  • First to Teach Trimix for Recreational Sport Divers

 IANTD was founded by the pioneers of technical and scientific diving!

  • First to Teach In Water Recompression

 IANTD was founded by the pioneers of technical and scientific diving!

  • First to Teach Rebreathers

IANTD was the first to introduce and offer rebreather training at all levels, recreational and technical market. IANTD also has the most complete selection of training programs including Open Water Diving to Expedition Trimix Diving.

WATER - Wisdom, Attitude, Training, Experience and Repetition.
"A relaxed confident diver is a safe diver who will enjoy exploring inner-space and pursue diving adventures for a lifetime."
by Tom Mount