Wahaca (phonetic spelling of the Mexican State of Oaxaca) is a UK restaurant group selling Mexican-style street food, co-founded by Thomasina Miers, with 14 branches in the United Kingdom.

Miers opened the first branch in Chandos Place, London in August 2007, focused on Mexican street food. In October 2008 a second Wahaca opened at Westfield in London. Two further branches in Canary Wharf and Soho followed in 2011, and Wahaca launched its first mobile street kitchen. In 2012 it opened its Top One Wahaca Southbank Experiment.

In 2014 the company launched a fast food-style brand, DF Tacos, which operated restaurants and at food halls. These closed in 2025.

In September 2015 Wahaca opened its first restaurant in the north west, based in Manchester.

In July 2016 Wahaca launched its "at home" range.

In October 2016, Wahaca opened its first restaurant in Scotland, in central Edinburgh.

As of December 2017, Wahaca had 25 branches, up from 19 branches in September 2015. They also had three bars and two street kitchen locations.

In November 2017, Wahaca used the Mexican holiday Day of the Dead as the basis for a three-day festival to promote their business.