The utility of Deci and Ryan’s self-determination theory (1985) and Coakley’s unidimensional identity model (1992) has yet to be adequately assessed in understanding youth athlete burnout. This may be due to a lack of measures available to assess these relevant constructs in a youth athlete sample. Having such inventories would likely enhance practitioners’ ability to identify, prevent, and treat this phenomenon more effectively in young children. Therefore, the current study assessed the psychometric properties for modified burnout, motivation, and athletic identity inventories for a youth athlete sample. Participants included 88 youth swimmers ranging in age from 7 to 12 years, who completed measures assessing burnout, motivation, and athletic identity. Internal consistencies and exploratory factor analyses provided preliminary psychometric support for the use and continued evaluation of these revised measures with young athletes.