Tuudur Vettik (born Feodor/Theodor Fabian Wettik; 3 January 1898 – 20 May 1982) was an Estonian composer, choral conductor and pedagogue, associated with the Estonian Song Festival movement. In the interwar and early Soviet period he held prominent festival leadership posts, including serving as head conductor of the 11th All-Estonian Song Festival (1938) and artistic director of the 12th festival (1947). He was arrested by Soviet authorities in February 1950 and sentenced to years of imprisonment; he later returned to musical work and teaching.
Tarmo Uustalu (born 19 January 1969) is an Estonian computer scientist. He is a professor in the School of Computer Science at Reykjavík University and a lead research scientist at the Tallinn University of Technology (TalTech). At TalTech he heads the High-assurance Software Laboratory. Uustalu has been a member of the Estonian Academy of Sciences since 2010.
Uustalu received the Estonian National Research Award in 2015 for a research series on mathematical structures in functional programming. In 2019 he was awarded the Order of the White Star, III class.
Ilmar Tomusk (born 28 June 1964) is an Estonian civil servant and children's writer. He has served as Director General of Estonia's language-supervision authority since October 1995, leading the institution through later reorganisations (including the 2020 change in which the former Keeleinspektsioon was renamed Keeleamet).
As a writer, Tomusk is best known for long-running children's series (including the Kriminalistid and Matemaatiline sõber books) and for language-focused humour and wordplay. His work has received major national prizes and international recognition; a title from the Matemaatiline sõber series was included in Estonia's selection for the 2024 IBBY Honour List.
Katrin Tiidenberg (born 26 July 1980) is an Estonian sociologist and internet researcher who is Professor of Participatory Culture at the Baltic Film, Media and Arts School, Tallinn University. Her research examines how people create meaning and relationships through everyday social media practices, including networked visuality and platformed intimacy.
Tiidenberg is the author of several books for academic and general audiences, including Selfies: Why We Love (and Hate) Them (Emerald, 2018), Sex and Social Media (with Emily van der Nagel; Emerald, 2020), and Tumblr (with Natalie Ann Hendry and Crystal Abidin; Polity, 2021).