The Power to Believe is the thirteenth studio album by English progressive rock band King Crimson. It was released on 24 February 2003 in the United Kingdom and on 4 March 2003 in the United States through Sanctuary Records and met with generally favourable reviews, with several critics appreciating its heightened aggression. The Power to Believe was preceded by the EP Happy with What You Have to Be Happy With (2002), which features alternate and otherwise unreleased tracks. The Power to Believe is likely the group's final studio album given their dissolution in 2021 and bandleader Robert Fripp saying reunions were unlikely.

King Crimson were an English progressive rock band formed in 1968 in London. The band drew inspiration from a wide variety of music, incorporating elements of classical, jazz, folk, heavy metal, gamelan, blues, industrial, electronic, experimental music and new wave. They exerted a strong influence on the early 1970s progressive rock movement, including on contemporaries such as Yes and Genesis, and continue to inspire subsequent generations of artists across multiple genres. The band earned a large cult following.