I.ČLTK Prague Open

The I.ČLTK Prague Open  is a tennis tournament held in Prague, the capital of the Czech Republic. The tournament has been part of the ATP Challenger Tour since 1991 (with an interruption in the years 2000, 2009–10) and part of the ITF Women's World Tennis Tour since 1995.

The I.ČLTK Prague Open has been held at the tennis arena onto Štvanice island on I. Czech Lawn Tennis Club.

Starting in 2015, a women's tournament was held in addition to the men's tournament and was part of the ITF Women's Circuit.

Jan Hernych is the singles record holder with three titles. Michal Tabara, Lukáš Rosol and Horacio Zeballos are the only three to win both singles and doubles in the same year.

Tournament naming

 * 1991–1999: (Czech Open, Skoda Czech Open) women; (TBD) men
 * 2001–2010: ECM Prague Open
 * 2011: Strabag Prague Open
 * 2012: CNGvitall Prague Open
 * 2013–2019: Advantage Cars Prague Open
 * 2020–present: I.ČLTK Prague Open