This paper presents a comparison between three proposed Medium Access Control (MAC) Protocols for next generation multimedia wireless ATM (WATM) networks. To support the ATM CBR, VBR, ABR services to end users, a MAC protocol must be able to provide bandwidth on demand with suitable performance guarantee. The protocols have been proposed to efficiently integrate multiple ATM traffics over the wireless channel while achieving high channel utilization. The objective of the comparison is to highlight the merits and demerits of the three proposed protocols