Note that reserves in handball are not counted: Montenegrin athletes further achieved the entry standards, either by qualifying time or by world ranking, in the following track and field events (up to a maximum of 3 athletes in each event):[2][3] Montenegro women's national handball team qualified for the Olympics by securing a top-two finish at the Podgorica leg of the 2020 IHF Olympic Qualification Tournament.

[5] Head coach: Bojana Popović Montenegro received an invitation from the Tripartite Commission to send a sailor in the Laser class to the Enoshima regatta.

[6] M = Medal race; EL = Eliminated – did not advance into the medal race Montenegro received an invitation from ISSF to send a female air pistol shooter to the Olympics, based on her minimum qualifying score (MQS) attained on or before June 5, 2021.

[8] Montenegro men's national water polo team qualified for the Olympics by advancing to the final match of the 2020 World Qualification Tournament in Rotterdam, Netherlands.

[11] Head coach: Vladimir Gojković[12] Note: Age as of 23 July 2021Source: Montenegro Men | Tokyo 2020 Olympics Archived 2021-07-22 at the Wayback Machine