The Massachusetts Association of Applied Behavior Analysis (MassABA) is a 501C3 non-profit association representing professionals in the field of Applied Behavior Analysis (ABA). MassABA is dedicated to professionalizing the field of ABA, providing training and educational opportunities to ABA professionals, and informing members about ABA practice developments in the Commonwealth. MassABA has over 1,100 members throughout the Commonwealth and is an affiliated chapter of the Association of Behavior Analysis International (ABAI).  MassABA is honored to represent the field of Applied Behavior Analysis (ABA) in Massachusetts.

Massachusetts has the most per capita number of BACB certificates than any other state. As of July 2014, Massachusetts has over 1,238 BACB certificates and 13 Graduate University programs with approved BACB course sequences. The majority of BACB certificates are employed to supervise and provide ABA services to individuals with disabilities.  Although behavior analysts serve individuals with a variety of disabilities, behavior analysts are most well-known and respected for their research and work in providing treatment services to individuals with Autism Spectrum Disorders (ASD).

MassABA was originally incorporated in May 2010 by: Steve Woolf, Robert F. Littleton Jr., Mariela Vargas-Irwin, John Stokes, Darlene E Crone-Todd, Brian Liu-Constant, Michael Dorsey, and Robert Ross.