Sheila R. McGibbon (16 June 1921, in Belfast, Northern Ireland – 4 October 1997) was an Irish stage, radio and television actress.
She was born to a modest Catholic family in 1921, and died in 1997, the same year as her husband, John Graham, a Protestant IRA volunteer and later pro-golfer.
She also starred in numerous radio, television, and movie roles.
In 1988 McGibbon appeared in the television dramatised documentary, God's Frontiersmen as "Elizabeth Brownlee", and was offered a role for a film but declined.
Sheila McGibbon remains one of the more noted Irish actresses of her time.