Agimat: Ang Mga Alamat ni Ramon Revilla Sr. Presents Tiagong Akyat, more popularly known as simply Tiagong Akyat was the first installment of the Philippine weekly mini-series Agimat: Ang Mga Alamat ni Ramon Revilla aired by ABS-CBN from August 15, 2009 to November 7, 2009, replacing Komiks: Nasaan Ka Maruja? and was replaced by Agimat: Ang Mga Alamat ni Ramon Revilla: Pepeng Agimat. The character of Tiagong Akyat is portrayed by Gerald Anderson opposite to her Leading Lady Erich Gonzales.

ABS-CBN presents Agimat: Ang Mga Alamat ni Ramon Revilla is a series based on the movies of Ramon Revilla Sr. of the 1990s and 2000s, which features the Filipino cultural belief in the powers of an agimat or amulet. The milieu of the characters and stories are primarily set in Cavite province where the belief in amulets remains strong to this day.