Proinsias is a given name, the Irish equivalent of Francis. Notable people with the name include:
People Proinsias De Rossa (born 1940), Irish Labour Party politician Proinsias Mac Airt (1922–1992), Irish republican activist Proinsias Mac an Bheatha (1910–1990), Irish language activist and writer Proinsias Mac Aonghusa (1933–2003), Irish journalist, writer, TV presenter, and campaigner Proinsias Mac Cana (1926–2004), academic and Celtic scholar Proinsias Ó Doibhlin (1660–1724), Irish Franciscan friar, poet, and scribe Proinsias Ó Maonaigh (1922–2006), Irish fiddler
Characters Proinsias Cassidy, character from the Preacher comic book series
See also Francis (given name) List of Irish-language given names