Pearson Television will be rebranded as Fremantle Media, but will operate under various names in local markets. The move is designed to separate the TV production company from its parent so it can continue to sell content to rival broadcasters.
The Fremantle Media name will not apply in certain territories where a unit already has a established brand which is not shared with one of RTL's partners.
This is the case in the UK, where the Thames Television brand will make a comeback.
The rebranding task was handled by Lambie-Nairn, which has had previous broadcasting experience launching the Channel 4 brand and relaunching BBC1 and BBC2.
Lambie-Nairn is now working on developing the visual identity of the brand. The new logo and visuals will be available on September 6.
The name change is expected to be a precursor to Financial Times owner Pearson's exit from RTL Group. Pearson owns a 22% stake in RTL, which was formed out of the merger of the TV businesses of Pearson, Bertelsmann and Vivendi.
Thames once held the ITV London weekday franchise, but lost this to Carlton when the ITV franchises were auctioned off in 1992.
Thames was seen to pay the price of defying Margaret Thatcher when, in the late Eighties, it broadcast a highly controversial documentary Death on the Rock. The programme accused the government of a shoot-to-kill policy following the shooting of three Provisional IRA terrorists in Gibraltar.