This pilot study explores the linguistic dynamics of Criollo Sanandresano, a variety of the Creole language spoken in the San Andrés Archipelago, Colombia. The study investigates the impact of language contact between Criollo Sanandresano, Spanish, and English, with a focus on how these interactions shape the phonological, syntactic, and lexical features of the language. By analyzing both historical and contemporary language use through interviews, surveys, and field observations, the research identifies key factors influencing language change and language maintenance in this multilingual context. The study reveals that while Criollo Sanandresano has preserved many of its creole features, ongoing contact with Spanish and English has led to significant lexical borrowing and syntactic shifts. This research contributes to a deeper understanding of language contact phenomena, particularly in island and coastal communities, and provides insights into the complex linguistic landscape of Colombia’s Caribbean region.