Dimensions in Time is a charity special crossover between the British science fiction television series Doctor Who and the soap opera EastEnders. The special was broadcast in two parts on 26 and 27 November 1993 and was filmed on location at Greenwich and the EastEnders Albert Square set.

Dimensions in Time featured all of the surviving actors to have played the Doctor as well as many of the character's companions and several of the EastEnders stars of the time. The special was produced for Children in Need following Doctor Who's cancellation in 1989 and was the only original story broadcast in celebration of the show's 30th anniversary.