6 a.m. is a time on the 12-hour clock.
6AM or variants may also refer to:
"6 AM", a 2013 song by Colombian singer J Balvin "6am", a 2013 song in the album More Than Just a Dream by Fitz and The Tantrums 6-Acetylmorphine (6-AM)
See also "Six O'Clock", a song by Ringo Starr "6 in the Mornin'", a song by Ice-T