The Big Dig was a highway-construction project in Boston.
Big Dig may also refer to:
- Big Dig (Regina, Saskatchewan)
- Big Dig (Liverpool)
- The Big Dig (film), a 1969 Israeli comedy film
- The Big Dig (TV series), a television series about allotments in the UK
- The Big Dig also refers to the Wawa Drop-In Project or Big Dig held at Wawa, Ontario in 1971
- The Big Dig Archaeological Site, an archaeology site in Sydney, New South Wales, Australia