Barbara Callcott was an Australian TV personality, best know for her portrayal of the iconic Mrs Marsh in the Colgate toothpaste ads.S

The TV and print commercials began in the 1970s, and she became one of the most well-known personalities, she continued intermittently in the campaign until shortly before her Death. Ms Callcott had continued to support the education of Australian children on the benefits of good oral health habits 'off screen' as well as publicly. Colgate announced that they will initiate an education grant in her name in recognition of her contribution to oral health education.

She died at her home in Noosa on 10 May 2013.