Richard Seaward Cantrell (1825 – 11 August 1872) was a 19th-century Member of Parliament from Dunedin, New Zealand.
[1][2] Cantrell was one of four candidates in the 1866 election in the Caversham electorate, coming second but being decisively beaten by Arthur John Burns.
[8] Cantrell represented the (parliamentary) Caversham electorate until 1872, when he resigned due to ill health.
[14] Cantrell's parliamentary resignation caused the 1872 Caversham by-election, which was held on 28 August and won by William Tolmie.
[16] As captain of a volunteer unit (South District Rifles), he received a military funeral.