On 30 September 2002, the channel began airing in Hungary and Romania, thus sharing its video feed with those countries while adding two additional audio tracks in Hungarian and Romanian.

On 1 March 2007, Cartoon Network Poland started broadcasting 24 hours a day.

On 1 October 2009, a separate feed of Cartoon Network was created for Hungary and Romania, while the two additional audio tracks that were previously to the channel added in September 2002 were moved there.

On 1 January 2021, Cartoon Network Poland began airing with the Czech license from RRTV.

On 18 September 2024, Cartoon Network Poland merged with the CEE and RSEE feed.