| H. Tati Santiesteban | |
| Office1: | Member of the Texas Senate from the 29th district |
| Term Start1: | January 9, 1973 |
| Term End1: | January 8, 1991 |
| Predecessor1: | Joe Christie |
| Successor1: | Peggy Rosson |
| Office2: | Member of the Texas House of Representatives from district 67-1 |
| Term Start2: | January 10, 1967 |
| Term End2: | January 9, 1973 |
| Predecessor2: | District created |
| Successor2: | District abolished |
| Birth Name: | Humberto Tati Santiesteban |
| Birth Date: | 3 November 1934 |
| Birth Place: | El Paso, Texas, U.S. |
| Death Place: | El Paso, Texas, U.S. |
| Party: | Democratic |
Humberto Tati Santiesteban (November 3, 1934 – October 29, 2020) was an American politician from Texas.
Santiesteban was born in El Paso, Texas, and went to New Mexico Military Institute. He served in the United States Army and was commissioned a first lieutenant. He attended the University of Texas School of Law.[1]
Santiesteban practiced law in El Paso. He served in the Texas House of Representatives from district 67-1 from 1967 to 1973 and in the Texas Senate from the 29th district from 1973 to 1991,[2] when he was defeated in the Democratic primary in a bid for reelection to an additional term.[3]
Santiesteban died from COVID-19 in El Paso, on October 29, 2020, at age 85, during the COVID-19 pandemic in Texas.[4]