To address high rates of mental health and developmental concerns facing young children ages 0–6 in the United States and internationally, providers across professional sectors need Infant and early childhood mental health (IECMH) training and support. The training and teleconsultation program (TTP) is a state‐funded program developed in one Mountain West state in the United States to provide free IECMH training and teleconsultation to any provider working with young children. The TTP included access to webinars and individual or group consultation with licensed mental health providers. Webinars focused on increasing awareness and knowledge related to attachment and child development, supporting parents and caregivers, trauma‐informed practice, supporting emotional health of staff and providers, and culturally responsive practices with infants, young children, and caregivers. Teleconsultation included case consultation, reflective individual and group supervision, and collaboration supports/referrals. During the 18‐month evaluation period, 1568 unique providers engaged in either training or teleconsultation services, an average of 9% growth in new providers each month, with representation from all professional sectors and all state counties. This program demonstrates the feasibility and need for statewide training and teleconsultation programs to help meet the needs of providers who interact with and support young children and caregivers.