A display mounting assembly includes: a wall bracket; a display-mounting bracket; and a position-adjusting mechanism disposed between and interconnecting the wall bracket and the display-mounting bracket, and including first and second connecting units and a supporting unit that is connected to the wall bracket. The first and second connecting units are provided on the display-mounting bracket and the supporting unit, respectively. Each of the first and second connecting units includes upper and lower connectors. The upper and lower connectors of the second connecting unit cooperatively define a circumferentially extending track. The upper and lower connectors of the first connecting unit are mounted slidably on the upper and lower connectors the second connecting unit so as to be co-slidable along the circumferentially extending track.