Don't You Know That?

"Don't You Know That?"
Side-A label of the U.S. vinyl single
Single by Luther Vandross
from the album Never Too Much
B-side	"I've Been Working"
Released	December 1981 (U.S.)
Format	45 RPM, 7", cassette
Genre	R&B, Soul
Length	4:01
Label	Epic
Songwriter(s)	Luther Vandross
Producer(s)	Luther Vandross, Larkin Arnold
Luther Vandross singles chronology
"Never Too Much" (1981) "Don't You Know That?" (1981) "If This World Were Mine" (1982)
"Never Too Much" (1981) "Don't You Know That?" (1981) "If This World Were Mine" (1982)
Never Too Much track listing
"Sugar and Spice (I Found Me a Girl)" (2) "Don't You Know That?" (3) "I've Been Working" (4)

"Don't You Know That?" is a song by American recording artist Luther Vandross. The song was released as the second single in support of the album Never Too Much.

The single followed Vandross's #1 R&B hit, "Never Too Much". In January 1982, Vandross scored his second top ten R&B hit when "Don't You Know That? peaked to No. 10 on the Billboard Hot R&B Singles chart.

This song is sampled by Black Sheep on "To Whom It May Concern" on their 1991 album A Wolf in Sheep's Clothing, and by Heavy D on "Got Me Waiting" on his 1994 album Nuttin' But Love.

The song was also sampled by 112 on the track "Love Me" featuring Mase on their 1998 studio album Room 112.