An adjustable eyeglasses assembly includes an eyeglasses frame, two temples and two rotary adjuster elements. The eyeglasses frame has two opposite temple connecting parts, each having an abutment face. Each temple has a pivot part connected foldably to one of the temple connecting parts, an ear piece, and a recess formed between the pivot part and the ear piece. Each adjuster element is disposed rotatably in the corresponding recess, has first and second end faces, and is rotatable to selectively move one of the first and second end faces to abut against the abutment face and to thereby limit a turning angle of the corresponding temple when the temple is unfolded, and the turning angle is changed when the first and second end faces are interchanged for abutment with the abutment face.