2018 Davis Cup Europe Zone Group III

The Europe Zone was the unique zone within Group 3 of the regional Davis Cup competition in 2018. The zone's competition was held in round robin format in two different locations, Plovdiv, Bulgaria and Ulcinj, Montenegro, from 3 to 7 April 2018. The two winning nations won promotion to Group II, Europe/Africa Zone, for 2019.

Participating nations
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Inactive nation
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Draw
Date: 3–7 April

Location 1: Tennis Club Lokomotiv, Plovdiv, Bulgaria (clay) Location 2: Ulcinj Bellevue, Ulcinj, Montenegro (clay)

Format: Round-robin basis. Two pools of four teams at each venue. The winners of each pool play-off against each other to determine which nation will be promoted to Europe/Africa Zone Group II in 2019. Two promoted – one from each venue.

Seeding

 * 1 Davis Cup Rankings as of 5 February 2018

Pool B (Ulcinj)
''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.''

Playoffs
' and ' promoted to Group II in 2019.