Mongonui and Bay of Islands was a parliamentary electorate in the Far North District in the Northland region of New Zealand, from 1871 to 1881.
The 1870 electoral redistribution was undertaken by a parliamentary select committee based on population data from the 1867 New Zealand census.
[3] Population centres that thus fell within the electorate included Kawakawa, Kaikohe, Russell, Kerikeri, Kaitaia, and Mangonui (which was spelled Mongonui before the 1880s[4]).
[9] In the 1879 election, Williams was defeated by John Lundon, who held the electorate until it was abolished in 1881.
[10] Lundon was defeated by Richard Hobbs standing in the Bay of Islands electorate in the 1881 election.