John Nassau Greene (8 March 1890 – 11 February 1973) was an Irish politician.
A farmer from Athy,[1] he was elected to Kildare County Council in the 1925 local elections, standing for the Farmers' Party in the Athy local electoral area.
[2] He was an independent member of Seanad Éireann from April to August 1938.
He was elected to the 2nd Seanad in April 1938 to the Agricultural Panel.
[3] He did not contest the August 1938 Seanad election.