There are two major Asia Cups in different sports in 2023, so the winner depends on which Asia Cup you mean:

2023 Asia Cup (Cricket)

• India won the 2023 Asia Cup in cricket by defeating Sri Lanka by 10 wickets in the final held on September 17, 2023, at the R. Premadasa Stadium in Colombo, Sri Lanka

• This victory marked India's 8th Asia Cup cricket title, making them the most successful team in the tournament's history

• The final was notable for Sri Lanka being bowled out for just 50 runs, the lowest total in any ODI Asia Cup final, and India chased the target quickly without losing a wicket

• Key performers included Mohammed Siraj, who was the player of the match in the final, and Kuldeep Yadav, who was the player of the series

2023 AFC Asian Cup (Football/Soccer)

• The 2023 AFC Asian Cup in football was won by Qatar, who were the hosts and defending champions

• Qatar won the tournament under coach Tintín Márquez, securing their first AFC Asian Cup title

• Japan was considered the favorite to win the tournament before it started, with strong squads and high chances predicted, but ultimately Qatar won

Summary:

• India won the 2023 Asia Cup in cricket.
• Qatar won the 2023 AFC Asian Cup in football.

If you meant the cricket Asia Cup, India is the winner. If you meant the football AFC Asian Cup, Qatar won.