Picture used for illustrative purposes only.
There was no immediate comment from Olympic organisers or Japan's Olympic Committee on the reports in the Nikkei and Yomiuri Shimbun dailies, which did not name their sources.
The newspapers said around 2,500 people including athletes and coaches would be included, with Japanese sports federations in charge of administering the jabs.
Japan's government had previously denied it was considering a plan to vaccinate athletes ahead of the general population.
Earlier this month, US drug giant Pfizer and its German partner BioNTech announced a deal with the International Olympic Committee to provide vaccines for competitors and staff at the Tokyo Games.
Around 2,500 people would be included, with Japanese sports federations in charge of administering the jabs.
They said initial doses for participating delegations would begin at the end of May, without specifying which teams would be involved.
Japan has so far only approved the Pfizer jab and the government has faced pressure for the comparatively slow rollout of its inoculation campaign as Tokyo and other areas battle new virus emergencies.
For now, only medical workers and the elderly are eligible for jabs, with no timeline yet set for the general population to receive them.
Polls show public dissatisfaction with the rollout, and the government has pledged to speed up the programme.
The Games, opening in just over 10 weeks, face continued controversy in Japan, where surveys show a majority oppose holding them this summer.
But in a potential bright spot for organisers, around 280 doctors have applied for just 200 volunteer positions at the Games, the Kyodo news agency reported Wednesday citing unnamed sources.
Organisers have come under fire for requesting medical volunteers step forward to help during the Games at a time when Japan's healthcare system is under pressure from a fourth virus wave.
Despite public opposition, organisers insist the Games can be held safely this summer, pointing to safety guidelines, increasing vaccination of athletes and a series of recent test events in Tokyo.
The Japanese authorities arrested the unemployed Kayoko Takahashi, 53, last Sunday, on charges of obstructing work by force, after the start of the torch marathon in Mito.
The Japanese capital and Olympic host city Tokyo is on track to report a record number of coronavirus cases, days after the Olympics began, exceeding the earlier record of 2,520 cases from Jan. 7.
Nippon Television reported that the cases in Tokyo city hit a record high near 4,000 on Thursday as two people attending the Tokyo Olympics from overseas have been admitted to hospital with COVID-19.
India and Pakistan are set to renew rivalry in a spine-tingling and the most anticipated clash of the T20 World Cup in Dubai on Sunday.
Namibia reached the Twenty20 World Cup second round for the first time on Friday when they defeated Ireland by eight wickets.World number 19 Namibia, the lowest-ranked team in the tournament, chased down their modest target of 126 with skipper Gerhard Erasmus making an unbeaten 53.
Fans from both the nations have shown immense interest in watching Sunday's game in Dubai as tickets for the key contest were sold out hours after they went on sale early this month.
Ireland and Namibia face off in a knockout clash of the T20 World Cup with a Super 12 berth at stake in Sharjah on Friday. The match will mark the exit for the loser while winners will punch a ticket for the Super 12, which gets under way on Oct.23.