The ongoing digitalization in the training sector produces new demands on the media-didactical competence of trainers. We conducted an online survey of 279 trainers in Germany to investigate the relationships among media-didactical competence, media-didactical self-efficacy, attitudes toward the use of digital media and the actual use of digital media in training. Furthermore, we compared trainers who attended a course on digital media with trainers who did not attend such a course. The analysis of the theoretically expected correlations between the variables resulted in not all hypotheses being accepted. The analysis of the group differences showed that the trainers who attended a course on digital media had higher media-didactical competence and media-didactical self-efficacy scores and used digital media more often in training. There was no significant difference in negative attitudes. The implications for the promotion of the media-didactical competence of trainers are discussed.