El 33 (Catalan pronunciation: [əl ˈtɾɛntə ˈtɾɛs]) is Catalonia's second public television channel.

Televisió de Catalunya began its trial broadcasts for Canal 33 on September 10, 1988 (the eve of National Day of Catalonia), much to the surprise for both Spanish Government and the Generalitat.

The Director-General of Telecommunications ordered TVE to interfere with the new channel's signal, while Televisió de Catalunya tried to circumvent the boycott with an illegal broadcaster that later had to be withdrawn.

Finally, there was a negotiation between the conflicting parties and the Ministry of Transport granted four frequencies in April for Barcelona, Tarragona, Lleida and Girona.

Educational programs such as Graduï's, ara pot and Universitat Oberta were included in their schedules, documentaries, children's and juvenile series within the Club Super3 brand.

On Monday, 8 January 1996, to strengthen the channel, broadcasting hours were extended (from 7:30 in the morning until 2:00 at night or late) and also changed its corporate image, simplifying and maintained its characteristic symbol, the logo for Canal 33.

On Monday, 1 October 2012, following the closure of 3XL, El 33 now shares its time with Canal Super3, from 21:30 to 06:00, due to the reorganization of certain channels to adapt Spain's ongoing economic situation.