Barnaby Thomas Gerard Joyce is an Australian politician who was the leader of the National Party of Australia from 2016 to 2018 and again from 2021 to 2022. Joyce was the 17th deputy prime minister of Australia during both his leadership tenures under Prime Minister Malcolm Turnbull from 2016 to 2018 and Prime Minister Scott Morrison from 2021 to 2022.

The National Party of Australia, also known as The Nationals or The Nats, is a centre-right, agrarian political party in Australia. Traditionally representing graziers, farmers, and regional voters generally, it began as the Australian Country Party in 1920 at a federal level.