Joseph Patrick Nannetti (19 March 1851 – 26 April 1915) was an Irish nationalist Home rule politician, trade union leader, and as Irish Parliamentary Party member and Member of Parliament (MP) represented the constituency of College Green, Dublin in the House of Commons of the United Kingdom from 1900 to 1915.

[5] Nannetti had represented an older school of trade unionism, based on skilled workmen and emphasising shared interest between workmen and employer, which was challenged by the rise of Larkinism mass unionism.

[5] First elected to Dublin Corporation as a councillor for the Rotunda ward in 1898, he remained a member until his death.

As a member of the Corporation, Nannetti was elected Lord Mayor of Dublin in 1906, and re-elected in 1907.

[6][2] He was also a member of the Catholic Cemeteries Committee and Trustee of the Royal Liver Friendly Society.