District 15 of the Texas Senate is a senatorial district that currently serves a portion of Harris county in the U.S. state of Texas.

[1] The current senator from District 15 is Molly Cook.

Cook was elected in a special election to succeed John Whitmire, who resigned on December 31, 2023, to take office as the mayor of Houston.

[2][3] District 15 has a population of 793,108 with 574,255 that is at voting age from the 2010 census.

[4] Election history of District 27 from 1992.