The 20th Texas Legislature met from January 11 to April 4, 1887, in regular session, and from April 16 to May 15, 1888, in a called session.
All members of the House of Representatives and a portion of the members of the Senate were elected in the 1886 general election.
^ Source material was unclear in which order the two Presidents pro tempore served.
Members of the Twentieth Texas Legislature as of the beginning of the Regular Session, January 11, 1887: ^ Source material was unclear in which order the representatives served or if they served concurrently.