Longitudinal data from 338 individuals across 64 teams in a simulation-based team-training context were used to examine the effects of dispositional goal orientation on self-regulated learning (self-efficacy and metacognition). Team goal orientation compositions, as reflected by average goal orientations of team members, were examined for moderating effects on these individual-level relationships. Finally, individual-level self-regulation was investigated for its influence on multiple team-level outcomes across time. Results showed generally positive effects of learning goal orientation and negative effects of avoid performance and prove performance goal orientations on rates of self-regulation during team training. However, several of these individual-level relationships were moderated by team goal orientation composition. The importance of self-regulation in teams was displayed by results showing the average level of self-regulation among a team's members over time was positively associated with team efficacy, team cooperation quality, and team decision making.