The 2019 Oracle Challenger Series – Houston was a professional tennis tournament played on outdoor hard courts.

This tournament was part of the 2019 ATP Challenger Tour and the 2019 WTA 125K series.

[1] The second edition took place at the George R. Brown Tennis Center from November 10 to 17, 2019 in Houston, United States.

[2] The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received wildcards into the singles main draw: The following player received entry into the singles main draw through protected ranking: The following players received entry from the qualifying draw: The following player received entry into the main draw as lucky loser: The following pair received a wildcard into the doubles main draw: