If 4

{{Use dmy dates|date=April 2022}}

{{Infobox album

| name = If 4

| type = Album

| artist = If

| cover = If 4 (If album - cover art).jpg

| alt =

| released = September 1972 (No U.S. release)

| recorded =

| venue =

| studio =

| genre = Jazz rock
Progressive rock

| length = 36:56

| label = Island

| producer = Lew Futterman

| prev_title = If 3

| prev_year = 1971

| next_title = Waterfall

| next_year = 1972

| misc = {{Singles

| name = If 4

| type = studio

| single1 = You in Your Small Corner" b/w "Waterfall

| single1date = 1972

| single2 =

| single2date =

}}

}}

If 4 is the fourth album released by the English jazz rock band If. It was first issued in 1972 and the last album to feature the original recording line-up. Capitol Records, the band's U.S. label, declined to issue this fourth album. Most of the tracks on this album were issued in the U.S. on Waterfall, in a slightly different form (and with a new line-up), by Metromedia Records.

If 4 was reissued in CD by Repertoire in 2007.