Texas RioGrande Legal Aid (TRLA) is a non-profit organization that provides free legal services to low-income residents in sixty-eight counties of Southwest Texas, and represents migrant and seasonal farm workers throughout the state of Texas and six southern states: Kentucky, Tennessee, Alabama, Mississippi, Louisiana and Arkansas. In addition, TRLA operates public defender programs in several Southwest Texas counties, representing the poor who are accused of felonies, misdemeanors and juvenile crimes. 

TRLA is the third largest legal services provider in the nation and the largest in the state of Texas. TRLA serves approximately 25,000 clients each year. However, over 2.6 million residents of Southwest Texas are considered eligible for TRLA services, a ratio of almost 21,000 potential clients per lawyer.

There are more than three dozen practice areas in which TRLA attorneys specialize including colonias and real estate, civil rights, environmental justice, labor and employment, public benefits, disaster assistance, federally subsidized housing, foreclosure, bankruptcy, wills and estates, border issues, human trafficking, international child abduction.

Program headquarters are in Mercedes, Texas with branch offices located throughout the state. TRLA also serves migrant and seasonal farmworkers in six southern states with its Southern Migrant Legal Services office in Nashville, Tennessee.

TRLA is funded in principal part by the Legal Services Corporation and the Texas Access to Justice Foundation. TRLA also receives smaller grants from a variety of federal, state and local agencies, foundations, and corporations. In addition, TRLA receives funding from the Texas Task Force on Indigent Defense to provide public defender services in criminal cases.