The 2005 RCA Championships was a tennis tournament played on outdoor hard courts.

It was the 18th edition of the event known that year as the RCA Championships, and was part of the International Series of the 2005 ATP Tour.

It took place at the Indianapolis Tennis Center in Indianapolis, Indiana, United States, from July 18 through July 25, 2005.

Robby Ginepri won the singles title.

Robby Ginepri defeated Taylor Dent, 4–6, 6–3, 3–0 (retired) Paul Hanley / Graydon Oliver defeated Simon Aspelin / Todd Perry, 6–2, 3–1 (retired)