2021 Davis Cup Europe Zone Group III

The Europe Zone was the unique zone within Group 3 of the regional Davis Cup competition in 2021. The zone's competition was held in round robin format in Larnaca, Cyprus, from 16 to 19 June 2021.

Participating nations
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Draw
Date: 16–19 June 2021

Location: Herodotou Tennis Academy, Larnaca, Cyprus (hard)

Format: Round-robin basis. Two pools – one of four teams and one of three teams – and nations will play each team once in their group. The two group winners will automatically earn promotion to the World Group II play-offs in 2022.

The two second-placed teams will fight for the third remaining promotion spot. The two teams finishing in third place will fight to avoid relegation to Europe Group IV and the team finishing fourth place in the pool of four teams will automatically be relegated.

Seeding

 * 1 Davis Cup Rankings as of 8 March 2021

Pool B
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-team ties, head-to-head records; 4. in three-team ties, (a) percentage of sets won (head-to-head records if two teams remain tied), then (b) percentage of games won (head-to-head records if two teams remain tied), then (c) Davis Cup rankings.''

Final placements

 * ', ' and  were promoted to 2022 Davis Cup World Group II Play-offs.
 * ' and ' were relegated to 2022 Davis Cup Europe Zone Group IV.