Joseph "Pentland" Firth CMG (25 March 1859 – 13 April 1931) was a New Zealand educationalist and teacher.

[1] On 8 May 1889, Firth married Janet McRae at the Church of St Michael and All Angels, Christchurch.

[3] By far the best performance of his career came for Wellington against Hawke's Bay in February 1884, when he ran through the second innings with figures of 8 for 13.

[4] Captaining Wellington against Nelson in March 1885, he opened both batting and bowling, taking 3 for 27 and 2 for 19 and making 20 and 54, the highest score in the match.

[7] Firth suffered from Parkinson's disease, and he died in Wellington on 13 April 1931.