The high rate of smartphone ownership as well as the high prevalence of obesity among African American men (AAM) offer opportunities to recruit them into gender-specific, tailored mobile health (mHealth) weight management programs and research. This study examined weight status, smartphone usage, and willingness to participate in mHealth weight management research among AAM. A self-administered survey was completed by a convenience sample of 311 AAM in north central Florida, United States. Participants received a $5 grocery store gift card. The mean BMI was 28.33 (SD, 6.7). Most (65.7%) were trying to lose weight or actively trying to not gain any more weight. Some (23.3%) reported that a physician told them to lose weight, and these men had a higher mean BMI than those who were not told to lose weight (p<0.0001). Most (65.0%) owned smartphones and used Facebook (72.0%) and YouTube (67.8%). Several (43.1%) expressed a willingness to participate in mHealth weight management research. Men who expressed a willingness had significantly higher BMI than those who did not (p<0.0001). Men also expressed willingness to participate in mHealth research that used text messages (62.0%), smartwatches/health trackers (55.0%), smartphone apps (51.4%), health tracking websites (32.8%), and online group support (21.5%). BMI was higher among those willing to participate in text-based research than those who were not (p=0.045). This study highlights the potential for recruiting AAM into mHealth weight management using a variety of tools and digital devices.