Adrian Marcu (born 3 December 1961) is a former professional tennis player from Romania.
As a Romanian representative he won a bronze medal in doubles at the 1983 Summer Universiade and appeared in a total of 12 Davis Cup ties for his country, including a World Group relegation play-off against West Germany in 1984.
He is a former coach of Simona Halep. In September 2021 he was reappointed as her coach, to work alongside Daniel Dobre, after the departure of Darren Cahill.
| 1. | 1988 | Sofia, Bulgaria | Carpet | Florin Segărceanu | Jaroslav Bulant Richard Vogel | 7–5, 6–2 |
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