Most aces served in a Davis Cup match
- Who
- Ivo Karlović
- Where
- Croatia (Porec,)
- When
- 18 September 2009
The most aces served in a Davis Cup match is 78 by Ivo Karlović (Croatia) in his match against Radek Stepanek (Czech Republic) at Porec, Croatia, on 18 September, 2009. Karlović lost the match 7-6, 6-7, 6-7, 7-6, 14-16.