Carol Cheng Yu Ling (Traditional Chinese: 鄭裕玲; born 9 September 1957), nicknamed Do Do, is a Hong Kong host and actress.

Cheng was born in Hong Kong to Sichuanese parents, while her heritage language is Mandarin.

After secondary school, she joined the actor training program at Commercial Television Limited in 1975 and debuted as a TV host the following year.

She is a frequent host of Miss Hong Kong Beauty Pageant, TVB Anniversary Awards,[2] and other variety shows such as The Weakest Link.

In 2000, Cheng won the TVB Anniversary Awards: My Favourite TV Role and Best Actress.