2020 Davis Cup World Group II knock-out stage

The 2021 Davis Cup World Group II knock-out stage will be held on 26–28 November 2021. The two winners of this round will qualify for the 2022 Davis Cup World Group I Play-offs while the two losers will qualify for the 2022 Davis Cup World Group II Play-offs.

Teams
Four teams will play for two spots in the World Group I play-offs, in series decided on a home and away basis. These four teams are the four lowest-ranked winning teams from World Group II.

The two winning teams from the knock-outs will play at the World Group I play-offs and the 2 losing teams will play at the World Group II play-offs.

''#: Nations ranking as of 20 September 2021. ''

Seeded teams
 * (#55)
 * (#56)

Unseeded teams
 * (#60)
 * (#62)

The draw was held on 22 September 2021.