See main article: 2018 Davis Cup.
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.
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.
| Pot | Nation | Rank1 | Seed |
|---|---|---|---|
| 1 | 59 | 1 | |
| 70 | 2 | ||
| 71 | 3 | ||
| 76 | 4 | ||
| 2 | 81 | 5 | |
| 84 | 6 | ||
| 101 | 7 | ||
| 101 | 8 | ||
| 3 | 106 | 9 | |
| 107 | 10 | ||
| 108 | 11 | ||
| 116 | 12 | ||
| 4 | 117 | 13 | |
| 122 | 14 | ||
| 126 | 15 | ||
| 132 | 16 |
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.
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and promoted to Group II in 2019.