| 2023 Challenger AAT | |
|---|---|
| Date | 24–30 April |
| Edition | 2nd |
| Surface | Clay |
| Location | Buenos Aires, Argentina |
| Champions | |
| Singles | |
 Thiago Seyboth Wild | |
| Doubles | |
 Francisco Comesaña / Thiago Seyboth Wild | |
The 2023 Challenger AAT was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Buenos Aires, Argentina between 24 and 30 April 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| ARG | Andrea Collarini | 181 | 1 |
| ARG | |||
 ITA | Luciano Darderi | 188 | 3 |
| ARG | Juan Pablo Ficovich | 197 | 4 |
| ARG | |||
 DOM | Nick Hardt | 221 | 6 |
| ARG | Mariano Navone | 227 | 7 |
| BRA | Thiago Seyboth Wild | 231 | 8 |
The following players received wildcards into the singles main draw:
Alex Barrena Alejo Lorenzo Lingua Lavallén Lautaro MidónThe following players received entry into the singles main draw as alternates:
Pedro Boscardin Dias 
Gonzalo Lama Juan Bautista OteguiThe following players received entry from the qualifying draw:
Valerio Aboian Tomás Farjat Gustavo Heide 
Conner Huertas del Pino Mariano Kestelboim Matías ZukasThe following players received entry as lucky losers:
Wilson Leite José Pereira Thiago Seyboth Wild def. Luciano Darderi 6–3, 6–3. Francisco Comesaña / Thiago Seyboth Wild def. Hernán Casanova / Santiago Rodríguez Taverna 6–3, 6–7(5–7), [10–6].The 2016 Campeonato Internacional de Tenis de Santos was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Santos, Brazil between 19 and 25 September 2016.
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