ATP Mallorca 06/23 12:15 19 [79] Thiago Monteiro v Paul Jubb [292] 3-6,4-6
ATP Mallorca 06/22 10:40 14 [79] Thiago Monteiro v Rio Noguchi [323] 7-6,6-0
French Open 05/27 17:30 23 [86] Thiago Monteiro v Miomir Kecmanovic [57] 2-6,1-6,6-4,5-7
French Open 05/24 12:45 19 [84] Thiago Monteiro v Daniel Rincon [226] 6-4,6-2
French Open 05/22 18:30 15 [84] Thiago Monteiro v Valentin Royer [200] 3-6,6-3,6-4
French Open 05/21 17:05 14 [84] Thiago Monteiro v Murkel Dellien [222] 6-4,6-1
ATP Rome 05/14 11:50 26 [56] Seyhan Bld Women v Thiago Monteiro [106] 7-6,6-3
ATP Rome 05/12 09:00 25 [106] Thiago Monteiro v Miomir Kecmanovic [58] 6-2,4-6,7-6
ATP Rome 05/10 12:20 24 [35] Jordan Thompson v Thiago Monteiro [106] 1-6,3-6
ATP Rome 05/08 12:20 23 [106] Thiago Monteiro v Gael Monfils [38] 6-2,7-5
ATP Rome 05/07 09:35 15 [83] Corentin Moutet v Thiago Monteiro [106] 3-6,4-6
ATP Rome 05/06 12:45 14 [403] Giovanni Oradini v Thiago Monteiro [106] 4-6,4-6
ATP Madrid 04/29 11:05 25 [31] Jiri Lehecka v Thiago Monteiro [118] 6-4,7-6
ATP Madrid 04/27 09:00 24 [118] Thiago Monteiro v Stefanos Tsitsipas [7] 6-4,6-4
ATP Madrid 04/25 11:15 23 [65] Dusan Lajovic v Thiago Monteiro [118] 4-6,3-6
ATP Madrid 04/23 09:00 15 [133] Radu Albot v Thiago Monteiro [118] 6-7,6-1,4-6
ATP Madrid 04/22 09:40 14 [226] Lucas Pouille v Thiago Monteiro [118] 6-4,4-6,4-6
Challenger Oeiras 04/15 11:25 25 [255] Jaime Faria v Thiago Monteiro [113] 6-2,3-6,7-6
Challenger Florianopolis 04/03 23:50 26 [110] Thiago Monteiro v Orlando Luz [335] 3-6,6-7
Challenger Florianopolis 04/01 21:45 25 [110] Thiago Monteiro v Bogdan Bobrov [399] 6-2,6-4
Challenger Sao Leopoldo 03/26 22:55 25 [371] Orlando Luz v Thiago Monteiro [110] 4-6,6-3,7-5
ATP Miami 03/18 17:10 14 [150] Adam Walton v Thiago Monteiro [110] 6-7,7-6,6-4
Challenger Santa Cruz 03/09 19:20 28 [113] Thiago Monteiro v Ivashka/ Vasilevski [127] 4-6,5-7
Challenger Santa Cruz 03/09 14:00 27 [113] Thiago Monteiro v Pedro Sakamoto [336] 6-1,6-4
Challenger Santa Cruz 03/06 21:05 26 [113] Thiago Monteiro v Valerio Aboian [478] 6-3,6-3
Challenger Santa Cruz 03/04 23:10 25 [113] Thiago Monteiro v Edoardo Lavagno [241] 6-2,6-2
ATP Rio De Janeiro 02/23 19:30 27 [118] Thiago Monteiro v Sebastian Baez [30] 4-6,6-1,2-6
ATP Rio De Janeiro 02/22 22:00 26 [118] Thiago Monteiro v Felipe Meligeni Rodrigues Alves [151] 7-5,6-3
ATP Rio De Janeiro 02/21 00:35 25 [2] Carlos Alcaraz v Thiago Monteiro [118] Retired
ATP Buenos Aires 02/11 18:30 19 [151] Andrea Vavassori v Thiago Monteiro [119] 6-4,7-6

Thiago Moura Monteiro (Brazilian Portuguese: [tʃiˈaɡu mõˈtejɾu]; born 31 May 1994) is a Brazilian professional tennis player. He has a career-high ATP singles ranking of world No. 61, achieved on 17 October 2022 and a doubles ranking of No. 144, achieved on 31 January 2022. He is currently the No. 3 singles player from Brazil.

On the ITF Junior Circuit, Monteiro had a combined ranking of No. 2, attained on February 2012. His best junior singles result was the 2011 Copa Gerdau (Grade A) title in Porto Alegre, Brazil.