Oliver Gross (born 17 June 1973) is a former professional tennis player from Germany.

The following year reached his first and only ATP Tour final, in San Marino, where he was defeated in straight sets by Carlos Costa.

Gross came from two sets down in the opening round to beat 16th seed Albert Costa 2–6, 4–6, 7–5, 6–2, 6–4.

He then accounted for dual French Open winner Sergi Bruguera 6–1, 6–3, 6–4 and in the third round had another five setter, defeating American wildcard Geoff Grant, 7–5, 6–7, 5–7, 6–3, 7–5.

Playing for a spot in the quarter-final, Gross was defeated by Swede Magnus Larsson 4–6, 5–7, 7–5, 2–6.