Robert Strombachs (; born 15 September 1999) is a Latvian-German tennis player. He has a career high ATP singles ranking of world No. 321 achieved on 23 June 2025 and a career high doubles ranking of No. 227 achieved on 28 September 2026. He is currently the No. 1 Latvian player.

Strombachs represents Latvia at the Davis Cup, where he has a W/L record of 7–6.

ATP Challenger and ITF Tour finals

Singles: 22 (11–11) LegendATP Challenger Tour (0–0)ITF Futures/World Tennis Tour (11–11)Finals by surfaceHard (11–11)Clay (0–0)Grass (0–0)

ResultW–LDateTournamentTierSurfaceOpponentScoreWin1–0Tunisia F33, MonastirFuturesHard Dimitriy Voronin6–4, 7–6(7–5)Win2–0Tunisia F35, MonastirFuturesHard Alexey Zakharov6–4, 6–0Loss2–1M15 Pajulahti, FinlandWorld Tennis TourHard Savriyan Danilov7–6(7–2), 4–6, 3–6Win3–1M15 Ra'anana, IsraelWorld Tennis TourHard Edan Leshem7–6(7–4), 6–4Win4–1M15 Monastir, TunisiaWorld Tennis TourHard Olaf Pieczkowski6–1, 6–2Loss4–2M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Jakub Menšík4–6, 0–6Loss4–3M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Marat Sharipov6–3, 2–6, 3–6Win5–3M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Mohamed Safwat6–2, 6–3Loss5–4M25 Sanxenxo, SpainWorld Tennis TourHard Te Rigele6–7(5–7), 6–3, 6–7(4–7)Win6–4M25 Sharm El Sheikh, EgyptWorld Tennis TourHard Petr Bar Biryukov6–7(4–7), 6–4, 3–0 ret.Loss6–5M25 Monastir, TunisiaWorld Tennis TourHard Hady Habib4–6, 4–6Loss6–6M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Marek Gengel4–6, 6–2, 5–7Loss6–7M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Marek Gengel4–6, 6–7(0–7)Loss6–8M15 Luanda, AngolaWorld Tennis TourHard Oliver Anderson4–6, 6–3, 6–7(5–7)Win7–8M15 Luanda, AngolaWorld Tennis TourHard Dominik Palán 6–3, 6–2Win8–8M15 Ceuta, SpainWorld Tennis TourHard Mathias Bourgue 6–2, 6–3Win9–8M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Moïse Kouamé 6–3, 6–2Win10–8M15 Monastir, TunisiaWorld Tennis TourHard Moez Echargui 6–1, 4–6, 6–1Loss10–9M15 Monastir, TunisiaWorld Tennis TourHard Giles Hussey 6–3, 6–7(2–7), 4–6Win11–9M25 Luanda, AngolaWorld Tennis TourHard Max Houkes 7–6(7–2), 4–6, 6–4Loss11–10M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Marek Gengel 6–7(5–7), 6–7(6–8)Loss11–11M25 Sharm El Sheikh, EgyptWorld Tennis TourHard Thomas Fancutt 3–6, 6–7(3–7)

Doubles: 29 (15–14) LegendATP Challenger Tour (1–1)ITF Futures/World Tennis Tour (14–13)Finals by surfaceHard (11–13)Clay (4–1)Grass (0–0)

ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin1–0Germany F5, KamenFuturesClay Marco Neubau Petr Nouza David Škoch6–4, 3–6, [10–5]Loss1–1Germany F6, SaarlouisFuturesClay Marco Neubau Santiago Besada Juan Ignacio Galarza4–6, 6–4, [8–10]Win2–1Tunisia F34, MonastirFuturesHard Bernardo Azevedo Duje Ajduković Petros Tsitsipas6–4, 6–7(6–8), [10–6]Win3–1Tunisia F35, MonastirFuturesHard Bernardo Azevedo Quentin Robert Hugo Schott3–6, 6–3, [10–1]Win4–1M25 Doboj, Bosnia and HerzegovinaWorld Tennis TourClay Elmar Ejupovic Ljubomir Čelebić Nerman FatićWalkoverLoss4–2M15 Setúbal, PortugalWorld Tennis TourHard Erik Crepaldi Henry Craig Simon Anthony Ivanov4–6, 6–4, [6–10]Loss4–3M15 Idanha-a-Nova, PortugalWorld Tennis TourHard Francisco Cabral Francisco Dias Gonçalo Falcão7–5, 4–6, [10–12]Win5–3M15 Heraklion, GreeceWorld Tennis TourHard Timo Stodder Lucas Miedler Neil Oberleitner6–4, 6–4Loss5–4M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Mārtiņš Podžus Hsu Yu-hsiou Jumpei Yamasaki3–6, 7–5, [7–10]Loss5–5M15 Monastir, TunisiaWorld Tennis TourHard Gabriel Décamps Mattia Bellucci Ajeet Rai6–7(1–7), 7–6(7–5), [4–10]Win6–5M15 Antalya, TurkeyWorld Tennis TourClay Kai Wehnelt Vladimir Filip Dragoș Nicolae Mădăraș6–2, 6–4Loss6–6M15 Vaasa, FinlandWorld Tennis TourHard Hazem Naw Eero Vasa Iiro Vasa3–6, 4–6Loss6–7M15 Ra'anana, IsraelWorld Tennis TourHard Kārlis Ozoliņš Adrian Bodmer Luca Castelnuovo4–6, 3–6Loss6–8M15 Pärnu, EstoniaWorld Tennis TourHard Daniel Little Szymon Kielan Yann Wójcik4–6, 6–7(5–7)Win7–8M15 Sëlva, ItalyWorld Tennis TourHard Leopold Zima Mick Veldheer Lewie Lane6–4, 6–4Loss7–9M15 Monastir, TunisiaWorld Tennis TourHard Olaf Pieczkowski Ray Ho Maximus Jones6–4, 6–7(3–7), [5–10]Win8–9M15 Wrocław, PolandWorld Tennis TourClay Nikita Mashtakov Szymon Walków Kacper Żuk 7–6(7–5), 7–5Win9–9M15 Luanda, AngolaWorld Tennis TourHard Kai Wehnelt Gregor Ramskogler Jasza Szajrych 6–3, 6–7(5–7), [10–7]Win10–9M15 Luanda, AngolaWorld Tennis TourHard Kai Wehnelt Gregor Ramskogler Jasza Szajrych 6–1, 6–1Loss10–10M15 Monastir, TunisiaWorld Tennis TourHard Lukáš Pokorný Buvaysar Gadamauri Dimitris Sakellaridis3–6, 3–6Win11–10M15 Monastir, TunisiaWorld Tennis TourHard Johannes Seeman Jeremy Gschwendtner Federico Valle 6–4, 7–6(7–4)Win12–10M25 Luanda, AngolaWorld Tennis TourHard Kai Wehnelt Alan Bojarski Yassine Smiej 6–3, 6–1 Win13–10M25 Luanda, AngolaWorld Tennis TourHard Kai Wehnelt Sven Corbinais Nicolas Ifi 6–2, 6–4Win14–10M15 San José, Costa RicaWorld Tennis TourHard Johannes Seeman Juan Miguel Bolívar Idárraga Juan Carlos Fuentes Vásquez 6–4, 4–6, [10–8] Loss14–11M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Volodymyr Uzhylovskyi Justas Trainauskas Pijus Vaitiekūnas6–4, 2–6, [2–10] Loss14–12M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Volodymyr Uzhylovskyi Pieter De Lange Sydney Zick3–6, 6–2, [8–10] Loss14–13M15 Sharm El Sheikh, EgyptWorld Tennis TourHard Constantin Bittoun Kouzmine Timofei Derepasko Daniel Siniakov4–6, 6–7(5–7)Loss14–14Abidjan, Ivory CoastChallengerHard Constantin Bittoun Kouzmine Oskar Brostrøm Poulsen Billy Suarez6–7(0–7), 0–6Win15–14Centurion, South AfricaChallengerHard Constantin Bittoun Kouzmine Mert Alkaya Arda Azkara6–4, 6–4

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