Katherine Kiernan Griffith (September 30, 1876[1] – October 17, 1921), also seen as Catherine Kiernan,[2] was an American character actress on stage and in silent films.

[1] Griffith had a career in vaudeville and the musical theatre before moving into film work.

[3] Described as a "large, commanding woman",[4] she appeared in dozens of silent films, including Tess of the D'Urbervilles (1913), The Gray Nun of Belgium (1915), The Greater Power (1916),[5] Murdered by Mistake (1916),[6] A Little Princess (1917) with Mary Pickford,[7] In Judgment Of (1918),[8] A Yankee Princess (1919) with Bessie Love,[9] The Woman Thou Gavest Me (1919),[10] The Spite Bride (1919) with Olive Thomas,[11] The Woman Next Door (1919), Pollyanna (1920), again with Mary Pickford,[12] Huckleberry Finn (1920), with her son Gordon Griffith as Tom Sawyer, Mid-Channel (1920), and They Shall Pay (1921).

Kiernan married fellow actor Harry Sutherland Griffith in 1897.

[4] Katherine Griffith died suddenly from a stroke in 1921, aged 45 years, at her home in Los Angeles.