The 2012 Swiss Indoors was a tennis tournament that was played on indoor hard courts.

It was the 43rd edition of the event known that year as the Swiss Indoors, and was part of the 500 series of the 2012 ATP World Tour.

It was held at the St. Jakobshalle in Basel, Switzerland, from 22 October until 28 October 2012.

Second-seeded Juan Martín del Potro won the singles title.

Juan Martín del Potro defeated Roger Federer, 6–4, 6–7(5–7), 7–6(7–3) Daniel Nestor / Nenad Zimonjić defeated Treat Conrad Huey / Dominic Inglot, 7–5, 6–7(4–7), [10–5] The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following teams received wildcards into the doubles main draw: