The convention will take place in capital Tokyo from October 7-9, coinciding with the Rugby World Cup.
Abta said the metropolis offered a "unique combination" of traditional and modern culture.
Besides the Rugby World Cup, Japan will in 2020 host the summer Olympic Games. The association said the events would give Abta members reason and opportunities to explore its diverse regional culture.
The announcement was made at Abta’s 2018 Travel Convention in Seville.
Conference and business sessions will be held at the International Convention Center Pamir. Delegates will stay at the central Prince Hotels & Resorts, Grand Prince Hotel New Takanawa.
The Japanese National Tourism Organisation (JNTO), Japan Association of Travel Agents (JATA), ANA - All Nippon Airways ,and Prince Hotels & Resorts will be the host partners.
Delegates will be able to travel directly and indirectly to Tokyo from a number of UK airports with ANA. Direct economy flights start from £599 and indirect economy flights from £449.
Registrations will open early next year, although as demand is expected to be high, delegates can reserve a place via the Travel Convention website from 9am on October 11 to guarantee an early bird registration fee and two-week priority booking period with ANA when flight reservations open.
Abta chief executive Mark Tanzer said: "With British holidaymakers showing increasing interest in visiting Japan, the convention will provide a great opportunity to show travel professionals all it has to offer – from its incredible cuisine, beautiful landscapes and traditional architecture to its super speed trains and illuminated skyscrapers.
“This will be the first time we host a convention in eastern Asia and with a number of exciting events coming up in the next couple of years, now is the perfect time to visit. I’d like to thank all the hosts for making this opportunity possible, and would encourage delegates to reserve a place as soon as they can.”
Satoshi Seino, JNTO president, said the number of annual visitors from the UK to Japan has more than doubled since 2011.
"[It is] testament to the appeal of Japanese culture to British people, as well as the diversity of activities available to tourists and the strength of our tourism infrastructure," he said.
Seino added he hoped delegates would take the opportunity to explore Japan’s regional cities.
