[1] In 2018, new rules were introduced for the Group I and II zonal events, with ties now being played as best-of-three sets over the course of two days.

Croatia won their second Davis Cup on indoor clay in the final match held at 25 November with a 3–1 win over France.

Date: 2–7 April Location: Mỹ Đình Sports Complex, Hanoi, Vietnam (indoor hard) Format: Round-robin basis.

Date: 29 January–3 February Location: Sultan Qaboos Sports Complex, Muscat, Oman (hard) Format: Round-robin basis.

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.

The winners of each pool play-off against each other to determine which two nations are promoted to Europe/Africa Zone Group II in 2019.