Denis Walsh may refer to the following people:
Denis Walsh (dual player) (born 1965), Irish Gaelic games manager and dual player with Cork Denis Walsh (Cloughduv hurler) (born 1961), Irish hurler for Cork Denis Walsh (Tipperary hurler) (1877–1952), Irish hurler Denis M. Walsh, Canadian academic and writer
See also Dennis Walsh (1933–2005), English astronomer Dennis G. Walsh (born 1965), American bishop of the Catholic Church