"Alone Again Or" is a song originally recorded in 1967 by the rock group Love and written by band member Bryan MacLean. It appears on the album Forever Changes, and was released as a single in the USA, UK, Australia, France and The Netherlands.

Versions have subsequently been recorded by an eclectic variety of bands and singers including UFO (1977), The Damned (1986), The Oblivians (1993), Sarah Brightman (1990), The Boo Radleys (1991), Chris Pérez Band (1999), Calexico (2004), Matthew Sweet and Susanna Hoffs (2006), Les Fradkin (2007). Two demo versions by MacLean himself were released in 1997 on his album Ifyoubelievein.

MacLean originally wrote the song, then called "Alone Again", in 1965 for Love's debut album. However, he did not complete it until the recording of "Forever Changes" in the summer of 1967. The song was inspired by his memory of waiting for a girlfriend, and the melody drew loosely on Prokofiev's Lieutenant Kije Suite. The essence of the song is the contrast between the positivity of the tune and the bleakness of the lyrics, with the chorus "And I will be alone again tonight, my dear" finishing with a lone acoustic guitar, closing the song with the opening melody that sounds anything but ecstatic, ending with an E-minor plus 2 chord.

For the recording session, arranger David Angel worked with MacLean, adding a string section and a horn part for a mariachi band whom co-producer Bruce Botnick had recently used on a Tijuana Brass album. MacLean later said "That was the happiest I ever was with anything we ever did as a band - the orchestral arrangement of that song." However, Botnick, with co-producer and band leader Arthur Lee, remixed the track to bring Lee's own unison vocal to the forefront of the song, at least partly on the grounds that MacLean's own vocal lead was too weak. Lee also added to the mystery of the song by changing the title to "Alone Again Or".

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