Ro Teimumu Vuikaba Kepa is a Fijian chief, former Member of the Parliament of Fiji, and former leader of the Social Democratic Liberal Party. She was the first Fijian woman to serve as Leader of the Opposition. She previously held the position of Deputy Prime Minister in the Qarase-led Soqosoqo Duavata ni Lewenivanua (SDL) government from 2001 to 2006. As the paramount chief of the Burebasaga Confederacy, she holds the title Roko Tui Dreketi.

In Fiji, the Leader of the Opposition is a senior politician who commands the support of the Official Opposition. The Leader of the Opposition is, by convention, the leader of the largest political party in the Parliament of Fiji that is not in government. This is usually this is the parliamentary leader of the second-largest caucus in Parliament. It did not originate in Fiji but has a long tradition; in British constitutional theory, the Leader of the Opposition must pose a formal alternative to the government, ready to form a government himself should the Prime Minister lose the confidence of the parliament.