| ATP Stockholm | 10/15 12:55 | 14 | [299] Filip C Jianu v Alexander Shevchenko [148] | 3-6,3-6 | |
| ATP Gijon | 10/08 12:00 | 14 | [128] Carlos Taberner v Filip C Jianu [293] | 7-5,6-7,7-6 | |
| Challenger Alicante | 10/03 09:00 | 19 | [293] Filip C Jianu v Hady Habib [375] | Retired | |
| Challenger Alicante | 10/02 10:50 | 14 | [309] Filip C Jianu v Inigo Cervantes [234] | 6-4,4-6,6-4 | |
| ATP Sofia | 09/26 09:00 | 19 | [110] Ugo Humbert v Filip C Jianu [314] | 6-3,7-6 | |
| ATP Sofia | 09/25 09:00 | 14 | [314] Filip C Jianu v Altug Celikbilek [220] | 6-1,4-6,7-6 | |
| Challenger Sibiu | 09/22 11:30 | 26 | [283] Nicholas D Ionel v Filip C Jianu [314] | Retired | |
| Challenger Sibiu | 09/20 10:25 | 25 | [422] Georgii Kravchenko v Filip C Jianu [314] | 6-2,1-6,6-7 | |
| Challenger Istanbul | 09/12 14:05 | 25 | [302] Filip C Jianu v Radu Albot [106] | 6-7,4-6 | |
| Challenger Seville | 09/06 08:00 | 25 | [302] Filip C Jianu v Carlos Taberner [116] | 2-6,3-6 | |
| Challenger Seville | 09/05 10:40 | 19 | [302] Filip C Jianu v Oscar Jose Gutierrez [378] | 6-2,7-6 | |
| Challenger Seville | 09/04 15:55 | 14 | Filip C Jianu v Pol Toledo Bague | 6-1,6-2 | |
| Challenger Banja Luka | 08/24 14:15 | 26 | [226] Damir Dzumhur v Filip C Jianu [305] | 5-7,6-1,7-5 | |
| Challenger Banja Luka | 08/23 11:00 | 25 | [366] Thiago Seyboth Wild v Filip C Jianu [305] | Retired | |
| Challenger San Marino | 08/13 19:15 | 28 | [329] Filip C Jianu v Matteo Arnaldi [204] | 1-6,5-7 | |
| Challenger San Marino | 08/12 15:00 | 27 | [329] Filip C Jianu v Nikolas S Izquierdo [252] | 6-2,6-4 | |
| Challenger San Marino | 08/10 15:05 | 26 | [108] Carlos Taberner v Filip C Jianu [329] | 4-6,3-6 | |
| Challenger San Marino | 08/08 15:00 | 25 | Filip C Jianu v Ernests Gulbis | 7-6,6-0 | |
| Challenger San Marino | 08/07 08:00 | 14 | Filip C Jianu v Alexander Weis | Cancelled | |
| ITF M25 Pitesti | 08/02 07:55 | 25 | Illya Beloborodko v Filip C Jianu | 6-7,6-3,6-3 | |
| ITF M15 Lodz | 07/28 10:40 | 26 | Filip C Jianu v Marcel Zielinski | Retired | |
| ITF M15 Lodz | 07/27 07:55 | 25 | Filip C Jianu v Stefano Reitano | 4-6,6-4,6-4 | |
| Challenger Iasi | 07/12 10:00 | 25 | [166] Geoffrey Blancaneaux v Filip C Jianu [310] | 6-2,7-5 | |
| Challenger Salzburg | 07/03 14:20 | 14 | [149] Victor Vlad Cornea v Filip C Jianu [315] | 7-5,7-6 | |
| Challenger Salzburg | 07/03 13:00 | 14 | Alexander Erler v Filip C Jianu | Cancelled | |
| Challenger Troyes | 07/01 10:05 | 26 | [315] Filip C Jianu v Thiago Agustin Tirante [194] | 4-6,7-6,2-6 | |
| Challenger Troyes | 06/28 08:30 | 25 | [321] Sebastian Fanselow v Filip C Jianu [315] | 2-6,4-6 | |
| Challenger Bratislava | 06/09 13:00 | 26 | [311] Filip C Jianu v Chun Hsin Tseng [104] | Retired | |
| Challenger Bratislava | 06/07 13:30 | 25 | [247] Illya Marchenko v Filip C Jianu [311] | 7-6,2-6,6-7 | |
| Challenger Bratislava | 06/06 09:00 | 19 | [311] Filip C Jianu v Oleg Prihodko [374] | Retired |
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.