The 2026 Rio Open, also known as Rio Open presented by Claro for sponsorship reasons, was a professional men's tennis tournament played on outdoor clay courts. It was the 12th edition of the Rio Open, and part of the ATP 500 tournaments of the 2026 ATP Tour. It took place in Rio de Janeiro, Brazil between 16 and 22 February, 2026.
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
The following pair received entry as alternates:
The following pairs received entry as lucky losers: