Parent-Child Interaction Therapy (PCIT) is an evidence-based practice (EBP) for young children with challenging behaviors. PCIT has been adapted to treat varying presentations and culturally diverse families. Although efforts have been made to disseminate PCIT into community settings, which often serve clinically complex, socio-culturally diverse, and marginalized communities, barriers to disseminating adapted models remain. An alternative strategy to understanding how to increase access to appropriately adapted PCIT is to learn from community clinicians' practice-based adaptations to meet their clients' diverse needs related to clinical presentation, culture, and language. This mixed-method study investigated community clinician adaptations of PCIT. Clinicians (N = 314) were recruited via PCIT listservs to complete a survey collecting background information, and adaptations to PCIT. Most clinicians had a master's degree (72.1%), were licensed (74.2%), and were PCIT-certified (70.7%). Qualitative interviews were conducted with a purposeful sample of 23 community clinicians, who were 39% Spanish-speaking, were 30% Latinx, and 30% reported serving a ≥50% Latinx clientele. Clinicians reported engaging in adaptations aimed at augmenting PCIT more extensively than adaptations involving removing core components. Themes from qualitative interviews converged with quantitative findings, with clinicians most frequently describing augmenting adaptations, and highlighted reasons for adapting PCIT. Clinicians primarily augmented treatment to address clients' clinical presentations. Clinicians rarely adapted treatment specifically for culture, but when mentioned, clinicians discussed tailoring idioms and phrases to match clients' culture for Spanish-speaking clients. Implications for training PCIT clinicians in intervention adaptations will be discussed.