The set consists of 50 pictograms although there are 33 sports in the competition because some have several disciplines that have also been represented, the Olympic Committee said.
The pictograms were unveiled during a ceremony marking 500 days until the opening ceremony of the 2020 Olympics, which are due to start on July 24, 2020, and exactly one year before the Olympic torch is lit in Olympia, Greece.
The event was attended by several athletes and school children who released the pictograms for the first time to the public.
Karate expert Kiyo Shimizu, who was present during the event, said the karate pictogram was very cool.
The pictograms, which have two designs - with and without frame - will be used in posters, tickets, licensed merchandise and also during the competition as signposts, maps or web pages, among other uses, the organising committee said.
The pictograms are the work of the designer Masaaki Hiromura, who expressed the dynamic beauty of the athletes and ensure they respect the legacy of the pioneers of 1964 Olympics, the committee said in a statement.
The Olympic pictograms were used for the first time in the Tokyo Games 55 years ago, which became a necessity to help communicate visually with a growing group of international athletes and spectators in a country where English is hardly spoken.
Since then, pictograms have been created for all the Olympic Games.
Meanwhile, the organisers of next year's games are considering ways to ease potential traffic congestion in the Japanese capital where some venues are situated in the central area of the city, the broadcaster NHK reported on Tuesday.
The city and national government are evaluating solutions aimed at the smooth running of transport services, the report said.
The Tokyo 2020 Summer Olympic Games are due to start with the opening ceremony at the New National Stadium on July 24, 2020, and then run until August 9, 2020.
The set consists of 50 pictograms although there are 33 sports in the competition because some have several disciplines that have also been represented.