Bire Kimisopa (born 22 December 1962) is a Papua New Guinean politician. He was a member of the National Parliament of Papua New Guinea from 2002 to 2007 and from 2012 to 2017, both times representing the seat of Goroka Open. He was Minister for Internal Security (2003–2006) and Minister for Justice (2006–2007) in Michael Somare's third government. He was the leader of the United Party from 2002 to 2007 and leader of the New Generation Party from 2016 to 2017.
Kimisopa was educated at the Papua New Guinea University of Technology and the University of New England in Australia, and was an accountant before entering politics. He was elected to the National Parliament for the United Party at the 2002 election, and was immediately appointed party leader following the defeat of his predecessor at the election. In his first months in office, he called for a budget honesty and integrity bill to prevent over-expenditure for political reasons and called for a hold to be placed on appointments to statutory bodies after a number of appointments he viewed as political in nature.
In August 2003, he was promoted to Minister for Internal Security in the Somare government. He pledged to clean up the national Department of Immigration, claiming that some government officers were taking bribes to "turn a blind eye" to human-smuggling and gun-running, called for proper post-mortems to determine causes of death and prevent revenge killings for perceived "sorcery" and pledged to ban MPs from using police officers as private bodyguards. He proposed to change the constitution to allow Papua New Guinean police to deploy overseas on regional assistance missions, which would be supported by the parliament in January 2004. He also proposed introducing curfews on major highways and extending the term of the police commissioner to reduce political influence.