Frank Millar (1925 – 13 May 2001) was a Northern Irish unionist politician.

Millar worked in the shipyards, where he became a shop steward, before becoming a founder member of Ulster Protestant Action in 1956.^[1]

Millar was first elected to Belfast City Council in 1972, representing Dock,^[2] then the Antrim and Shore Road areas. He held his seat at each subsequent election until retiring in 1993. He was Deputy Lord Mayor of Belfast in 1981-2 and 1992-3.^[1]

Millar was also elected to the Northern Ireland Assembly in 1973 for Belfast North as an Ulster Unionist Party anti-Sunningdale Agreement candidate. He held his seat on the Northern Ireland Constitutional Convention in 1975 as an independent Unionist, and for the 1982 Northern Ireland Assembly.^[1]

In 1986, Millar was fined £100 for describing supporters of Cliftonville F.C. as "Republican bastards". Two years later, he called for Irish Travellers to be "incinerated",^[2] while in 1989, he was fined £50 for punching Democratic Unionist Party councillor Sammy Wilson.^[1] He also faced criticism for describing Nelson Mandela as a "black Provo", and gay people as "deviants".^[2]

In the late 1980s, Millar campaigned against the privatisation of the Harland and Wolff shipyard.^[1]

Millar's son, Frank Millar Jr, was also an Ulster Unionist Party Assembly member.^[2]