"Funny How Time Slips Away" is a song written by Willie Nelson and first recorded by country singer Billy Walker. Walker's version peaked at number 23 on the Hot C&W Sides chart. The tune is slightly similar to "When Two Worlds Collide" which was written by Roger Miller and Bill Anderson.
- 1961 - Jimmy Elledge released a version as a single on RCA Victor, peaking at #22 on the Billboard Hot 100. His version sold over one million copies.
- 1963 - Johnny Tillotson released a version as a single on Cadence, peaking at #50 on the Billboard Hot 100.
- 1964 - Joe Hinton had a major crossover hit with his version which went to #1 on the Cash Box R&B chart and #13 on the Billboard Hot 100 pop chart in the U.S.
- 1965 - Perry Como released a version for RCA, recorded in Nashville and produced by Chet Atkins for his album The Scene Changes.
- 1965 - The Supremes released a version on their album, The Supremes Sing Country, Western & Pop, and included the song on 1974's Diana Ross & the Supremes Anthology.
- 1966 - Georgie Fame released a version on his album Get Away.
- 1967 - Harry James released a version on his album Our Leader!, with vocals by Ernie Andrews. (Dot DLP 3801 and DLP 25801)
- 1967 - Rick Nelson released a version on his album Country fever
- 1971 - Elvis Presley released a version on his album Elvis Country (I'm 10,000 Years Old).
- 1973 - Al Green released a version on his album Call Me.
- 1974 - Bryan Ferry released a version on his album Another Time Another Place.
- 1975 - Narvel Felts released a version which peaked at #12 on the Hot Country Singles chart.
- 1976 - Dorothy Moore released a version which reached #7 on the soul charts and #57 on the Hot 100
- 1982 - The Spinners recorded a version which peaked at #43 on the soul chart and #67 on the Hot 100.
- 1985 - The Green on Red, LP "No Free Lunch".
- 1994 - Al Green and Lyle Lovett released a version on the compilation album Rhythm, Country and Blues. Green won his ninth Grammy Award for this version in the category of "Best Pop Collaboration with Vocals".
- 1998 - Dan Castellaneta (as Homer Simpson) and Linda Ronstadt recorded the song for the Simpsons album The Yellow Album
- 2005 - B.B. King and Bobby Bland did a version of the song for the album "B.B. King & Friends: 80". The album reached #45 in the Billboard 200 top albums chart.
- 2005 - George Jones recorded a version on his album Hits I Missed...And One I Didn't, accompanied by Hargus "Pig" Robbins on piano and Paul Franklin on steel guitar.
- 2010 - A duet recorded by Willie Nelson and Juice Newton was released on Newton's album Duets, Friends & Memories. The recording was also released as a single.
- 2017 - a duet between Nelson and Glen Campbell which appeared on Campbell's final album Adiós and won both artists the 2017 CMA Award for Vocal Event of the Year.
- 2017 - Jim James recorded a version for his album A Tribute to 2.