This study describes immigrant clients enrolled in Massachusetts batterer intervention (BI) programs from 2002 to 2004 (N = 480). Our study sought to (a) describe the immigrant men enrolled in Massachusetts BI programs, (b) investigate whether immigrants were more or less likely to complete BI programs than were nonimmigrants, and (c) investigate whether immigrants in non-English, culturally specific groups were more or less likely to complete BI programs than were immigrants in mainstream groups. Of BI program clients, 14% were immigrants. Of these, 73% were not U.S. citizens. Immigrants were more likely to complete the programs than were nonimmigrants (54% vs. 38%). Although a greater proportion of immigrants who attended non-English groups completed the programs than did immigrants who attended mainstream groups (66% and 46%), neither the bivariate nor the adjusted odds ratio was statistically significant. Possible reasons for differences between immigrant and nonimmigrant characteristics and program completion rates are discussed.