| Birth Name: | Mae Altschuk |
| Birth Place: | Brooklyn, New York City, U.S. |
| Birth Date: | 13 August 1882 |
| Death Place: | Los Angeles, California, U.S. |
| Resting Place: | Calvary Cemetery, East Los Angeles |
| Occupation: | Stage, film actress |
| Children: | Dolores Costello Helene Costello |
| Yearsactive: | 1911–1917 |
Mae Costello (born Mae Altschuk; August 13, 1882 – August 2, 1929) was an American stage and film actress of the early twentieth-century.
Mae Costello was born Mae Altschuk in Brooklyn, New York to Catherine (née Callender) and Lewis Altschuk (born 1855), a Bavarian immigrant.[1] As a teenager, she began performing in stage productions in stock theater companies throughout the United States.
In 1902, she married actor Maurice Costello.[2] They had two daughters, Dolores Costello and Helene Costello, both of whom became successful film actresses. The couple separated in 1910 and divorced in 1927.
Costello appeared in motion pictures beginning in the early 1910s, billed as Mrs. Costello, opposite such actors as John Bunny, Flora Finch, Wallace Reid, Florence Turner, Antonio Moreno, Bobby Connelly and Clara Kimball Young, as well as her husband and daughters.
In 1929, Costello died of heart disease and was interred at the Calvary Cemetery, East Los Angeles, California.