Thank you for your inquiry.
You most definitely can put the LG - 55" Class (54-5/8" Diag.) - LED - 1080p - HDTV - Model # 55LB5550 on a wall. Wall mounting is optional on most if not all TVs. All LG TVs are Wall Mountable and they are all VESA compliant, so if you get a VESA compatible Wall Mount then you can mount the TV. The VESA® Size (mm) for this TV is 400 X 400. Wall mounts come in three types, Fixed Mounts; Tilting Mounts and Full Motion Mounts. Best Buy carries them all and have a few different makes like Rocketfish, Sanus, and Insignia. Rocketfish and Insignia are house brands...IFV