Frank Milner CMG (7 November 1875 – 2 December 1944) was a notable New Zealand school principal and educationalist. He was born in Nelson, New Zealand on 7 November 1875.^[1]

Milner was educated at Nelson College from 1889 to 1892,^[2] and at Canterbury College, where he completed his BA in English and Latin in 1895, and his MA with first-class honours in language and literature in 1896.^[1]

He taught at Nelson College between 1897 and 1906, and applied unsuccessfully for the headmaster's position there in 1903.^[1] From 1906 until his death in 1944 Milner was the rector of Waitaki Boys' High School in Oamaru, where he was known as "The Man".^[1] In January 1907, he married Florence Violet George in Wellington.^[3]

In the 1925 New Year Honours Milner was appointed a Companion of the Order of St Michael and St George in recognition of his services to education in New Zealand,^[4] and in 1935 he was awarded the King George V Silver Jubilee Medal.^[5]

He was to stand in Oamaru for the National Party in the cancelled 1941 general election.^[1]

His son Ian Milner was later an Australian diplomat and civil servant, and then an academic at Charles University, Prague.^[6]