Pieology Pizzeria is a Tustin, California-based pizza chain within the fast-casual dining restaurants category.

[1] Similar to their competitors, Pieology offers individual, artisan style pizzas, which are baked in a high-temperature open-flame oven.

[5] In March 2016, Pieology expanded into the state of Hawaii, opening a location in Aina Haina with the help of franchise partner Cotti Foods.

[15] In May 2016, Pieology opened its first location outside the continental United States in the city of Tamuning in the American territory of Guam with the help of a local franchise partner.

[16] In 2016, Pieology received an investment from Andrew and Peggy Cherng, the founders of Panda Restaurant Group.

[21] In March 2018, Pieology announced plans to expand into Spain with a focus towards a franchise model via a licensing agreement with the Comess Group.