| Challenger Split | 04/08 08:00 | 19 | [326] Felix Gill v Robert Strombachs [386] | 6-1,4-6,6-3 | |
| Challenger Split | 04/07 12:00 | 14 | Duje Markovina v Robert Strombachs | 2-6,2-6 | |
| Challenger de Barcelona | 03/31 11:00 | 14 | [375] Robert Strombachs v Ryan Nijboer [483] | 3-6,0-6 | |
| Challenger de Pau | 02/19 13:05 | 19 | [424] James Trotter v Robert Strombachs [342] | 6-4,7-5 | |
| Challenger de Pau | 02/18 15:15 | 14 | [384] Alexis Gautier v Robert Strombachs [342] | 3-6,3-6 | |
| Challenger de Glasgow | 02/15 10:00 | - | Hamish Stewart v Robert Strombachs | 1-6,7-5,6-1 | |
| Challenger de Glasgow | 02/14 14:40 | 26 | Hamish Stewart v Robert Strombachs | 1-6,7-5,6-1 | |
| Challenger de Glasgow | 02/12 14:00 | 25 | [342] Robert Strombachs v Anton Matusevich [468] | 7-6,6-1 | |
| Copa Davis | 02/03 14:05 | 4 | Casper Ruud v Robert Strombachs | Cancelled | |
| Copa Davis | 02/02 17:10 | 1 | [413] Viktor Durasovic v Robert Strombachs [346] | 7-5,6-2 | |
| ITF M25 Nussloch | 01/26 18:00 | 27 | [344] Robert Strombachs v Alastair Gray [492] | 7-5,5-7,4-6 | |
| ITF M25 Nussloch | 01/25 13:20 | 26 | Robert Strombachs v Patrick Zahraj | 6-3,6-3 | |
| ITF M25 Nussloch | 01/24 19:25 | 25 | Robert Strombachs v Louis Van Herck | 6-3,6-1 | |
| ITF M25 Sunderland | 01/18 12:20 | 26 | Hamish Stewart v Robert Strombachs | 6-7,6-4,6-4 | |
| ITF M25 Sunderland | 01/17 14:20 | 25 | [499] George Houghton v Robert Strombachs [344] | 5-7,0-6 | |
| ITF M25 Loughborough | 01/09 15:20 | 25 | Martyn Pawelski v Robert Strombachs | 7-6,6-4 | |
| ITF M25 Esch/Alzette | 01/05 13:00 | 27 | [381] Clement Chidekh v Robert Strombachs [345] | 6-7,6-2,6-2 | |
| ITF M25 Esch/Alzette | 01/04 14:00 | 26 | [403] Giovanni Oradini v Robert Strombachs [345] | 6-7,4-6 | |
| ITF M25 Esch/Alzette | 01/03 09:55 | 25 | Luca Giacomini v Robert Strombachs | 1-6,2-6 | |
| ITF M15 Sharm El Sheikh | 12/13 08:00 | 25 | Robert Strombachs v Saveliy Ivanov | Retired | |
| ITF M25 Monastir | 11/24 09:00 | 27 | [340] Robert Strombachs v Yanki Erel [370] | 4-6,5-7 | |
| ITF M25 Monastir | 11/23 14:30 | 26 | [340] Robert Strombachs v Mats Rosenkranz [432] | 6-2,6-3 | |
| ITF M25 Monastir | 11/22 13:55 | 25 | [340] Robert Strombachs v Mark Wallner [266] | 7-6,6-2 | |
| ITF M25 Monastir | 11/19 09:00 | 29 | [342] Robert Strombachs v Hady Habib [356] | 4-6,4-6 | |
| ITF M25 Monastir | 11/18 09:00 | 28 | Robert Strombachs v Gian Marco Moroni | 6-0,2-6,6-3 | |
| ITF M25 Monastir | 11/17 11:00 | 27 | [246] Clement Tabur v Robert Strombachs [342] | 4-6,7-5,4-6 | |
| ITF M25 Monastir | 11/16 10:35 | 26 | [458] Eliakim Coulibaly v Robert Strombachs [342] | 4-6,3-6 | |
| ITF M25 Monastir | 11/15 12:25 | 25 | Nikolay Vylegzhanin v Robert Strombachs | 6-4,3-6,3-6 | |
| ITF M25 Sharm El Sheikh | 11/10 08:00 | 27 | [474] Saba Purtseladze v Robert Strombachs [372] | 6-2,6-3 | |
| ITF M25 Sharm El Sheikh | 11/09 08:00 | 26 | Alec Beckley v Robert Strombachs | 1-6,4-6 |
Robert Strombachs (Latvian: Roberts Štrombahs; born 15 September 1999) is a Latvian-German tennis player.
Strombachs has a career high ATP singles ranking of world No. 338, achieved on 27 November 2023. He also has a career high ATP doubles ranking of No. 383, achieved on 19 August 2019.
Strombachs represents Latvia at the Davis Cup, where he has a W/L record of 7–6.