Connectedness with nature refers to an individual’s beliefs about their relationship with the natural environment. The current paper integrates connectedness with nature into a broader framework of balanced identity theory as a form of self-concept, and presents new data showing that individuals tend toward balanced-congruity and hold cognitive configurations that balance self-concept, environmental attitudes, and self-esteem. In essence, when an individual scores highly on one of these constructs, it is likely that they will score highly on the other two constructs. Two hundred and seventy-six undergraduate students completed explicit and implicit measures of connectedness with nature, attitudes toward nature, and self-esteem. The balanced-congruity principle was supported with implicit measures (e.g., Implicit Association Test), but not explicitly with self-report measures. Results suggest that attitudes toward nature, connectedness with nature, and self-esteem form a balanced triadic structure of implicit environmental identity. The findings extend our understanding of connectedness with nature, by integrating it into a broader framework that links connectedness, attitudes, and self-esteem as a triadic form of environmental identity. This finding has important implications for practitioners interested in fostering environmental identities and promoting sustainability.