Deborah Watling (born 2 January 1948, Fulmer Chase, Buckinghamshire) is a British actress best known for her role as Victoria Waterfield, a companion of the Second Doctor in the BBC television series Doctor Who. She also starred in Alice, Dennis Potter's version of Alice's Adventures in Wonderland, for the BBC's The Wednesday Play strand in 1965, a small role in That'll Be the Day and as Norma Baker in the ITV series Danger UXB in 1979.

Watling played Victoria in Doctor Who from 1967 to 1968, as well as appearing in Dimensions in Time (1993) and Downtime (1995). Her father Jack Watling appeared in Doctor Who as Professor Travers in the serials The Abominable Snowmen and The Web of Fear as well as Downtime. Her sister Dilys and her brother Giles are also actors.

Deborah has also appeared in the Doctor Who audio drama, Three's a Crowd.

Watling regularly attends Doctor Who conventions and events, where she meets fans and speaks about her time on the programme. She co-starred with Cliff Richard in the 1970s film Take Me High.

Born on 2 January 1948, Deborah Watling grew up in an acting family. She attended stage school after failing her O level exams, but left after three weeks and got herself an agent. She then landed the part of Alice in a BBC play "The Life of Lewis Carroll" (aka "Wednesday Play, The" (1964) {Alice (#1.33)}). This was followed by other roles, including film parts, with Cliff Richard in Take Me High (1973) and with David Essex (I) in That'll Be the Day (1973). She was offered the role of Victoria in "Doctor Who" (1963) as Innes Lloyd had remembered the Radio Times cover for "The Life of Lewis Carroll" and asked Deborah to play the part. Following Doctor Who, Deborah opened her own boutique before landing a part in "Newcomers, The" (1965). Since then she has appeared in numerous TV roles including "Danger UXB" (1979), "Rising Damp" (1974) {Hello Young Lovers (#4.1)}, and "Doctor in Charge" (1972) and has done much work in the theatre.