The 2009 SAT Bangkok Open was a professional tennis tournament played on indoor hard courts. It was part of the 2009 ATP Challenger Tour. It took place in Bangkok, Thailand between 16 and 22 March 2009.

Singles entrants

Seeds

Other entrants

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following player received special exempt into the main draw:

Champions

Men's singles

🇩🇪 Florian Mayer def. 🇹🇭 Danai Udomchoke, 7–5, 6–2

Men's doubles

🇬🇧 Joshua Goodall / 🇦🇺 Joseph Sirianni def. 🇷🇺 Mikhail Elgin / 🇷🇺 Alexander Kudryavtsev, 6–3, 6–1