The 24-year-old singer took to Instagram, where he shared a black-and-white picture showing off his new ink.
The tattoo reads "SGT," with "2 4 17" inscribed below.
Although the photograph does not have a caption, SGT is the acronym of "Still Got Time".
The number series resembles the British format for the date April 2, which was seemingly the day he got the tattoo.
Malik dropped the new single on March 23, on which he collaborated with rapper PartyNextDoor. The song is the first track from his upcoming LP.