The San Marcos Gun Show will be held next on Dec 16th-17th, 2023 with additional shows on Mar 16th-17th, 2024, Apr 13th-14th, 2024, May 4th-5th, 2024, Aug 24th-25th, 2024, and Nov 2nd-3rd, 2024 in San Marcos, TX. This San Marcos gun show is held at City Of San Marcos Conference Center and hosted by Texas Gun Shows. All federal and local firearm laws and ordinances must be obeyed.