Yia Yia Mary's (sometimes referred to as Yia Yia Mary's Greek Kitchen and Yia Yia Mary's Mediterranean Kitchen) was a Greek restaurant with two locations in Houston, in the U.S. state of Texas. Pappas Restaurants opened the Uptown Houston restaurant in 2004, and second Yia Yia Mary's began operating at William P. Hobby Airport in 2015. The restaurants served Greek cuisine including seafood and received a generally positive reception. Both locations closed in 2020, during the COVID-19 pandemic.