Despite its alleged relative stability, grammatical gender has nevertheless been completely lost in a number of languages. Through the analysis of three case studies (Afrikaans, Ossetic, and Cappadocian Greek) and a brief survey of similar developments in other languages, this article investigates the link between the loss of gender and language contact, which appears to be a key factor in the decline of gender systems. Drawing on recent research within the framework of sociolinguistic typology, it focuses on the specific influence that a particular type of language contact (namely, non-native or imperfect learning) usually exerts on the grammar of the languages being acquired. It also discusses the diachronic asymmetry between the loss and the development of gender in language contact settings: while gender loss seems to be contact-related in quite a number of cases, replication or borrowing of gender turns out to be a rather restricted or even rare phenomenon.