Pat Carroll (born 1946 in Melbourne) is an Australian singer from the 1960s.

- For the English designer, please use Pat Carroll.
- For the American actress, please use Pat Carroll.

In the mid-1960s Carroll and her friend Olivia Newton-John, formed a singing duo called Pat and Olivia.
In 1969 she married John Farrar songwriter and producer whom worked with Olivia Newton-John from 1971 to 1989.
In July 1970 Carroll and her husband relocated to the United Kingdom, and from late 1975 they have resided in the US. They are the parents of Sam Farrar (Phantom Planet bassist and Maroon 5 touring member) and Max Farrar (guitarist and keyboardist).