The Tokyo Metropolitan Government reported 884 new cases of the coronavirus in the Japanese capital on Monday.
The figure is the highest for a Monday since the pandemic began and well exceeds the previous record of 481 announced one week before.
The daily tally also topped 800 for the third straight day.
The total number of cases confirmed in Tokyo now stands at 63,474.
Tokyo officials say the number of seriously ill patients reached 108, up seven from the day before. The figure is the highest to date.