Relationships among collectivism, ethnic identity, acculturation, and self-disclosure rates in Latinos' intercultural and intracultural friendships and acquaintanceships were examined. An online survey collected data from 59 international Latinos and 73 Latino American nationals. Results revealed that relationship type (friend vs. acquaintance) and relationship partner ethnicity (Latino vs. White American) had significant relationships with self-disclosure. Participants disclosed more personal information to friends than acquaintances, and they disclosed more to Latino than to White American persons. Higher collectivism was related to increased self-disclosure across all relationship types. Acculturation exerted a significant main effect only in the context of friendships but interacted significantly with ethnicity in both friendships and acquaintanceships. Ethnic identity did not display any significant direct or interaction effects. (PsycINFO Database Record (c) 2017 APA, all rights reserved)