Despite the widespread distribution of Latvians globally, the importance of heritage language for cultural connectivity remains underexplored. This study explores the preservation of the Latvian language among diaspora communities, employing linguistic autoethnography, participant observation, and communication analysis to examine the interplay between individual experiences and institutional support in maintaining cultural identity. Drawing from the author’s bilingual Latvian–Lithuanian background and based on the example of a mixed Latvian–Lithuanian family living in Finland, the study highlights the role of the family strategy in using languages at home, the role of grandparents, as well as heritage tourism, music, and arts in strengthening cultural ties. Through linguistic autoethnography, the article captures the essence of personal and collective efforts to sustain the Latvian language. Participant observation in diasporan activities and analysis of communicative practices reveal how diasporan Latvians actively engage in preserving their linguistic heritage. The Latvian Language Agency’s initiatives, including supporting language schools abroad, publishing educational resources, and organizing summer camps, are critically examined. The study advocates for a unified approach that combines personal commitment and structured support, emphasizing the crucial role of both in the vibrancy of the Latvian language abroad.