One who possesses; one who occupies, holds, owns, or controls; one who has actual participation or enjoyment, generally of that which is desirable; a proprietor
a person who owns something; "they are searching for the owner of the car"; "who is the owner of that friendly smile?"
The possessor of something is the person who has it. Ms Nova is the proud possessor of a truly incredible voice. someone who owns or has something - often used humorously possessor of