Maria Isabel de Santa Rita Vás is an Indian author, playwright, theatre director and teacher. She is the founder of the Mustard Seed Art Company (an amateur theatre group from Goa) and has been associated from its inception with the Positive People (an NGO that spreads awareness on HIV/AIDS and provides support to its victims). With over 65 theatre productions under the banner of The Mustard Seed Art Company, Vás has written and directed a number of plays in English. She has primarily been an educator for more than 40 years. She is the author of Frescoes in the Womb: Six Plays from Goa. She often features as a speaker at the Goa Arts and Literature Festival (GALF).