Peter Clarke (tennis)
Peter Clarke is a former professional tennis player from Ireland.
Clarke made the round of 16 in the boys' singles event at the 1996 Australian Open.
He appeared in seven Davis Cup ties for Ireland, playing 12 rubbers, of which he won six.
The number one ranked Irish player for much of his career, Clarke played on the ITF Men's Circuit and ATP Challenger Circuit.
Finals
Singles
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 11 November 2001 | Beaumaris, Australia | Hard |  Scott Draper | 1–6, 6–7 |
| Runner-up | 2. | 18 November 2001 | Frankston, Australia | Hard | Peter Luczak | 4–6, 6–1, 4–6 |
| Winner | 1. | 23 June 2002 | Berkeley, United States | Hard |  Lazar Magdinčev | 6–2, 7–6 |
| Runner-up | 3. | 17 August 2002 | London, Great Britain | Hard |  Mike Scheidweiler | 6–4, 1–6, 1–6 |
| Winner | 2. | 30 March 2003 | Mobile, United States | Hard |  Michael Joyce | 7–6, 6–4 |
| Winner | 3. | 27 April 2003 | Bergamo, Italy | Clay |  Andrea Stoppini | 6–3, 6–4 |
| Runner-up | 4. | 4 May 2003 | Bournemouth, Great Britain | Clay |  Tomáš Berdych | 1–6, 4–6 |
| Winner | 4. | 21 July 2007 | Yerevan, Armenia | Hard |  Mikhail Elgin | 5–7, 6–2, 6–3 |
Doubles
| Outcome | No. | Date | Tournament | Surface | Partnering | Opponents | Score |
| Runner-up | 1. | 25 August 2007 | Helsinki, Finland | Hard | Raphael Durek | Ikaika Jobe Ryan Stotland | 4–6, 6–3, 2–6 |