John Blennerhassett (c. 1660 – 1709) was an Anglo-Irish politician who represented various constituencies in the Irish House of Commons.
He was first elected as a Member of Parliament in 1692, representing Tralee.
He was subsequently MP for County Kerry between 1703 and his death in 1709.
His eldest son was the MP, John Blennerhassett.
This article about a Member of the Parliament of Ireland (up to 1800) is a stub.