Waldyr is a given name. Notable people with the given name include:
Waldyr Geraldo Boccardo (1936–2018), Brazilian basketball player Waldyr Calheiros Novaes (1923–2013), Brazilian Roman Catholic bishop Waldyr Igayara de Souza (1934–2002), Brazilian comic book artist and editor Waldyr Pereira (1928–2001), known professionally as Didi, Brazilian footballer Waldyr Alves Rodrigues Jr. (1946–2017), Brazilian physicist