Applications for Tokyo 2020 Olympic Games Ticket Lottery to be Accepted from 9 May. - Tokyo 2020 Official Ticket Website launched, providing detailed event and ticket information -

The Tokyo Organising Committee of the Olympic and Paralympic Games (Tokyo 2020) today announced that applications for participation in a lottery for the initial offering of Olympic Games tickets will be accepted from residents of Japan from 9 to 28 May 2019, with lottery results announced on 20 June. Applications can only be made online via the Tokyo 2020 Official Ticket Website, which was launched today.
Tokyo 2020 Official Ticket Website

Pre-registration on TOKYO 2020 ID portal is necessary to enter the lottery, which can be done at TOKYO 2020 ID Website.
TOKYO 2020 ID
Fans will be able to apply for tickets to the Olympic Games through the lottery phase until 28 May, providing plenty of time to make requests. This is the best chance for Japanese residents to get the tickets that they want for the Games. An English version of this pre-registration page will be launched soon.
Should they not be successful in the lottery, residents of Japan will still be able to request tickets during the first-come, first-served phase, which will commence in autumn 2019.

A further phase of ticket sales will start in the spring of 2020, offering first-come, first-served sales on a global basis. Details will be announced later.

In order to plan their Olympic experience, fans are encouraged to visit the Tokyo 2020 Official Ticket Website, which is published in Japanese and English and accessible at Tokyo 2020 Official Ticket Website.
Tokyo 2020 Official Ticket Website

It contains the latest information on the event line-up for each session of the Olympic Games Tokyo 2020, details of the different categories of tickets, their prices and seat maps, as well as ticket sales guidelines.
Session Information

With a record 339 events in 33 sports, Tokyo 2020 will offer non-stop action for everyone. Ticket prices have been set to suit a wide range of budgets, allowing as many people as possible to attend Olympic events. Millions of tickets will be available at affordable prices, with the cheapest general tickets priced at JPY 2,500 and half of all tickets priced at JPY 8,000 or less. A symbolic ticket price of JPY 2,020 for families and groups resident in Japan whose members include children, senior citizens or individuals with impairments; this price will also be available in conjunction with a school programme targeting over one million students across Japan.

Paralympic ticket sales will commence in summer 2019.

Overseas Residents
People living outside of Japan will be able to purchase tickets through Authorised Ticket Resellers (ATRs). ATRs are official sales channels outside of Japan appointed by the National Olympic Committees of the individual countries and regions and approved by Tokyo 2020, and have the exclusive right to sell Games tickets in agreed countries and regions.

From 9 May 2019, ATRs can conduct promotional activities with fans in their assigned territories and engage them in Olympic ticket promotion prior to the launch of actual ticket sales. ATRs can commence their ticket sales from 15 June 2019. The sales launch date in each territory may vary depending on each ATR's sales plans and schedules.

To learn more about the ticket sales schedule in their own country or region, overseas residents can visit their respective ATR's website; details of these can be found at following link.
Tokyo 2020 Authorized Ticket Reseller Site - ATR List

While overseas residents cannot purchase tickets via the Tokyo 2020 Official Ticket Website at this stage, this option will be available to them from the spring of 2020