Arthur Penrose Seymour (20 March 1832 – 3 April 1923) was a 19th-century New Zealand politician from Picton.

Seymour was a member of parliament for various Marlborough electorates for a total of twelve years.

He emigrated to New Zealand in 1851 on the Maori, travelling with his sister Marie Louise and her husband, Dr Ralph Richardson.

[4] During the council's first meeting, Seymour successfully moved that the provincial offices be built in Picton.

This further fuelled the ongoing political conflict with other politicians who favoured Blenheim as the seat of provincial government.

Together with all the other intense personal rivalries in the (e.g. between small farmers and pastoralists), provincial politics had a comic opera quality to it in the Marlborough Province.

[19] On election day, Dodson and Seymour received 550 and 381 votes, respectively, a significant majority of 169.

[20] The 1887 general election in the Waimea-Picton electorate was contested by Seymour, Joseph Harkness and Charles H. Mills, who received 446, 444 and 415 votes, respectively.

He was again elected into this position in July 1879 and held the role until dissolution of parliament in November 1881.