| ITF - M15 Bucareste | 05/15 10:55 | 26 | Filip Cristian Jianu v Ioan Alexandru Chirita | 5-7,7-5,6-7 | |
| ITF - M15 Bucareste | 05/14 11:15 | 25 | Filip C Jianu v Mario G Fernandez | 6-1,6-4 | |
| ITF - M25 Värnamo | 05/11 09:00 | 28 | [308] Marvin Moeller v Filip Cristian Jianu [278] | 6-3,2-6,7-5 | |
| ITF - M25 Värnamo | 05/10 08:15 | 27 | [485] Viktor Durasovic v Filip Cristian Jianu [278] | 7-6,3-6,1-6 | |
| ITF - M25 Värnamo | 05/09 08:15 | 26 | Noah Perfetti v Filip Cristian Jianu | 1-6,3-6 | |
| ITF - M25 Värnamo | 05/08 08:15 | 25 | Jeiden Saidizand v Filip Cristian Jianu | 3-6,1-6 | |
| ITF - M15 Antália | 05/04 08:00 | 28 | Filip Cristian Jianu v Michael Agwi | 3-6,4-6 | |
| ITF - M15 Antália | 05/03 09:30 | 27 | Filip Cristian Jianu v Mika Brunold | 6-1,4-6,6-3 | |
| ITF - M15 Antália | 05/02 07:00 | 26 | [281] Filip Cristian Jianu v Matej Vocel [402] | 6-1,6-0 | |
| ITF - M15 Antália | 05/01 12:35 | 25 | Filip Cristian Jianu v Maximilian Figl | 6-2,6-2 | |
| ITF - M15 Antália | 04/24 09:45 | 25 | Filip Cristian Jianu v Denis Constantin Spiridon | Retired | |
| ATP - Bucareste | 04/15 08:00 | 19 | [132] Radu Albot v Filip Cristian Jianu [282] | 7-6,6-4 |
Filip Cristian Jianu (born 18 September 2001) is a Romanian tennis player.
Jianu has a career high ATP singles ranking of No. 264 achieved on 16 January 2023 and a doubles ranking of No. 451 achieved on 10 April 2023. He is currently the No. 1 Romanian player.
Jianu has a career high ITF junior ranking of No. 5 achieved on 4 February 2019.
Jianu represents Romania at the Davis Cup.