<p>Recent research has increasingly focused on understanding the association between parental emotion regulation and parental burnout (PB). However, existing studies have predominantly examined a limited set of emotion regulation strategies, hindering a comprehensive understanding of the role emotion regulation plays in PB. This study addresses this gap by examining the association between PB and parents' emotion controllability beliefs, as well as the various cognitive and behavioral emotion regulation strategies they habitually employ. The participants were 677 Polish parents (62.2% mothers). A variable-centered approach, specifically regression analyses, revealed that emotion controllability beliefs and emotion regulation strategies explained 35% of the variance in PB after controlling for sociodemographic. Additionally, a person-centered approach, specifically latent profile analyses, provided nuanced insights. These analyses identified four profiles: "Burnout," "Vulnerable-to-Burnout," and two "No-Burnout" profiles. The “Burnout” profile was characterized by greater self-blaming, catastrophizing, and withdrawal from others, coupled with lower use of cognitive reappraisal, positive refocusing, and refocusing on planning. The findings suggest that considering emotion controllability beliefs and a broad range of emotion regulation strategies is essential for a deeper understanding of variations in PB. They highlight the potential for targeting parents' emotion controllability beliefs and specific emotion regulation strategies as avenues for developing interventions to mitigate PB.</p>