"Se Me Olvidó Otra Vez" (transl. "I'd Forgotten Once Again") is a song written and performed by Mexican singer-songwriter Juan Gabriel from his fourth studio album, Juan Gabriel con el Mariachi Vargas de Tecalitlán (1974). It is a ranchera song that tells of an impossible reunion as the singer forgets he is the only one who loved her. The track was released as the lead single from the album in 1975. "Se Me Olvido Otra Vez" 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. Juan Gabriel has re-recorded the track 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).