"Se Me Olvidó Otra Vez" is a song written and performed by Mexican singer-songwriter Juan Gabriel for his fourth studio album, Juan Gabriel con el Mariachi Vargas de Tecalitlán (1974). The song is a ranchera number that tells of an awaited but impossible reunion as the singer forgets he is the only one who loved the woman. It was released as the lead single from the album in 1975. The song has been listed as among Juan Gabriel's best songs according to music critics and was one of the best-performing singles of 1975 in Mexico. Gabriel has re-recorded the song twice, the first for his compilation album, Por Los Siglos (2001), and as a duet with fellow Mexican singer-songwriter Marco Antonio Solís on his 28th studio album, Los Dúo (2015).

Alberto Aguilera Valadez, known professionally as Juan Gabriel, was a Mexican singer, songwriter and actor. Colloquially nicknamed Juanga and El Divo de Juárez, Juan Gabriel was known for his flamboyant style, which broke norms and standards within the Latin music industry. Widely regarded as one of the best and most prolific Mexican composers and singers of all time, he is regarded as a pop icon.