María del Pilar Margarita Casajuana Martínez known as Maria Alba (28 December 1905, in Barcelona, Catalonia, Spain – 26 October 1999, in San Diego, California), was a Spanish-American film actress. Originally named Maria Casajuana, she appeared in 25 feature films, starting with Road House in 1928 and ending with La morena de mi copla in 1946. Her most notable appearance was probably as "Saturday" in the 1932 Douglas Fairbanks film Mr. Robinson Crusoe. Signed by the Fox Film Corporation after winning Fox Film contest in Spain, Maria Casajuana came to the United States in 1927 a second cabin class passenger on the S/S Suffern, which sailed from the Port of Le Havre on 16 April, France, and arrived at the Port of New York, 26 April 1927.

Maria Alba married Richard J. Burk on July 9, 1950; the couple had three children.