| ATP Bucharest | 04/15 08:00 | 19 | [132] Radu Albot v Filip Cristian Jianu [282] | 7-6,6-4 | |
| ATP Bucharest | 04/14 08:00 | 25 | [282] Filip Cristian Jianu v Titouan Droguet [151] | 6-4,7-6 | |
| Challenger Split | 04/07 13:30 | 14 | [293] Filip Cristian Jianu v Mili Poljicak [419] | 4-6,4-6 | |
| Challenger Split | 04/07 08:00 | 14 | Filip Cristian Jianu v Aldin Setkic | Cancelled | |
| Challenger Barletta | 04/05 11:00 | 27 | [453] Jacopo Berrettini v Filip Cristian Jianu [293] | 4-6,6-4,6-4 | |
| Challenger Barletta | 04/03 08:00 | 26 | [229] Zdenek Kolar v Filip Cristian Jianu [293] | 2-6,6-3,3-6 | |
| Challenger Barletta | 04/02 08:00 | 25 | [293] Filip Cristian Jianu v Stefano Travaglia [195] | 3-6,6-3,6-0 | |
| ITF M15 Antalya | 03/24 07:30 | 29 | Filip Cristian Jianu v Joel Schwaerzler | 6-1,6-2 | |
| ITF M15 Antalya | 03/23 09:30 | 28 | Filip Cristian Jianu v Mariano Tammaro | 6-1,6-2 | |
| ITF M15 Antalya | 03/22 10:15 | 27 | [311] Filip Cristian Jianu v Bogdan Pavel [361] | 4-6,6-1,6-2 | |
| ITF M15 Antalya | 03/21 08:45 | 26 | Filip Cristian Jianu v John Sperle | 6-3,7-5 | |
| ITF M15 Antalya | 03/20 08:55 | 25 | Filip Cristian Jianu v Liam Gavrielides | 6-4,6-4 | |
| ITF M15 Kish Island | 03/10 07:50 | 29 | Filip C Jianu v Gergely Madarasz | 6-2,6-3 | |
| ITF M15 Kish Island | 03/09 09:40 | 28 | [340] Filip C Jianu v Dan A Tomescu [363] | 6-4,7-5 | |
| ITF M15 Kish Island | 03/08 08:40 | 27 | Filip C Jianu v Samir Hamza Reguig | 6-1,6-2 | |
| ITF M15 Kish Island | 03/07 06:30 | 26 | Filip C Jianu v Guelfo Baldovinetti | 6-1,6-1 | |
| ITF M15 Kish Island | 03/06 09:05 | 25 | Filip C Jianu v Filippo Alberti | 6-3,6-0 | |
| ITF M15 Kish Island | 03/04 09:30 | 29 | Filip Cristian Jianu v Branko Djuric | 7-5,6-4 | |
| ITF M15 Kish Island | 03/03 06:20 | 28 | [338] Filip Cristian Jianu v Dan Alexandru Tomescu [362] | 6-3,4-6,6-3 | |
| ITF M15 Kish Island | 03/02 09:00 | 27 | Filip Cristian Jianu v Maxim Zhukov | 6-2,6-3 | |
| ITF M15 Kish Island | 02/29 09:25 | 26 | Filip Cristian Jianu v Samyar Elyasi | 6-4,7-5 | |
| ITF M15 Kish Island | 02/28 08:40 | 25 | Filip Cristian Jianu v Ali Yazdani | 6-1,6-2 | |
| ITF M25 Hammamet | 02/23 08:00 | 26 | Filip Cristian Jianu v Peter Heller | 6-7,6-4,3-6 | |
| ITF M25 Hammamet | 02/22 09:20 | 25 | Filip Cristian Jianu v Francesco Ferrari | 6-4,6-1 | |
| ITF M25 Hammamet | 02/18 08:50 | 29 | [376] Filip C Jianu v Pol M Tiffon [418] | 3-6,3-6 | |
| ITF M25 Hammamet | 02/17 09:00 | 28 | Oleksandr Ovcharenko v Filip C Jianu | 4-6,4-6 | |
| ITF M25 Hammamet | 02/16 11:40 | 27 | Filip C Jianu v Alessandro Ingarao | 6-2,6-0 | |
| ITF M25 Hammamet | 02/15 12:50 | 26 | Filip C Jianu v Peter Benjamin Privara | 6-2,5-7,6-3 | |
| ITF M25 Hammamet | 02/13 11:35 | 25 | Filip C Jianu v Samir Hamza Reguig | 7-5,6-3 | |
| ITF M25 Hammamet | 02/10 10:30 | 28 | Filip Cristian Jianu v Kamil Majchrzak | 5-7,4-6 |
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.
Jianu has a career high ITF junior ranking of No. 5 achieved on 4 February 2019.
Jianu represents Romania at the Davis Cup.