2012 Keio Challenger

The 2012 Keio Challenger was a professional tennis tournament played on hard courts. It was the eighth edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Yokohama, Japan between 12 and 18 November 2012.

Singles main-draw entrants

Seeds

¹ Rankings are as of November 5, 2012.

Other entrants

The following players received wildcards into the singles main draw:

The following players received entry from the qualifying draw:

Champions

Singles

Matteo Viola def. Mirza Bašić, 7–6, 6–3

Doubles

Prakash Amritraj / Philipp Oswald def. Sanchai Ratiwatana / Sonchat Ratiwatana, 6–3, 6–4