2018 Hopman Cup

The Hopman Cup XXX (also known as the 2018 Mastercard Hopman Cup for sponsorship reasons) was the 30th edition of the Hopman Cup tournament between nations in men's and women's tennis. It took place at the Perth Arena in Perth, Western Australia.

France were the defending champions; however they did not return to defend their title. This marked the first edition without France competing since 2010.

Switzerland defeated Germany in the final to win its third title.

Seeds
The draw took place on 5 October 2017 and it placed the 8 teams into two groups, according to the following ranking-based seedings:

Group A
All times are local (UTC+8).

Belgium vs. Canada
Notes. Due to Eugenie Bouchard's withdrawal from the mixed doubles rubber, the scores are counted as 4–0, 4–0 win for Belgium.

Group B
All times are local (UTC+8).

Japan vs. United States
Notes. Maddison Inglis of Australia played instead of Naomi Osaka for the first match. Scores counted as 6–0, 6–0 win for Vandeweghe and 4–0, 4–0 win for the American mixed pair due to Naomi Osaka's withdrawal due to illness. Due to Jack Sock's retirement in the men's singles rubber, the second set is counted as 6–1 win for Sugita. Sock was replaced by Australian Pat Cash for the doubles match.