The New Theatre (Welsh: Theatr Newydd although it usually uses its English name as a title) is one of the principal theatres in Cardiff, Wales. It is located in the city centre on Park Place, close to the beautiful civic centre buildings.
The theatre is on the small side with a capacity of only 1144. However, it is still capable of presenting many touring productions of musicals, plays and children's shows and it continues to present a high quality Christmas pantomime annually.
The theatre is the former principal base of Welsh National Opera, a company which has now set up a more permanent and suitable residence in the Wales Millennium Centre.
During 2006, the New Theatre celebrated its centenary.
Arts Active is the education, community and audience engagement section of St David's Hall and the New Theatre.