Dovas Zaunius (German: David Saunus; 1845–1921) was a Prussian Lithuanian cultural and political activist.

[8] In 1900, Zaunius and his daughter Morta Zauniūtė were entrusted with managing the budget for the Lithuanian exposition at the world's fair in Paris.

Some of this collection was donated to the Lithuanian Scientific Society in Vilnius, the rest was lost during World War II.

[4] In 1890, together with Martynas Jankus, Jonas Smalakys, and others, Zaunius established the first of the Lithuanian Conservative Election Societies.

[10] In 1892 and 1900, he was involved with the collection of signatures for petitions to the Prussian Ministers of Education asking to leave the Lithuanian language in primary schools.