Focus are a Dutch progressive rock band formed in Amsterdam, The Netherlands in 1969 by Thijs van Leer. The band have undergone numerous formations in its history. Since 2011 it has comprised van Leer on vocals, keyboards, and flute, Pierre van der Linden on drums, Bobby Jacobs on bass, and Menno Gootjes on guitar.

Formed of members of the pit band for the Dutch production of the rock musical Hair, Focus gained popularity following the success of Focus II (1971) which contained the hit single "Hocus Pocus". Their success continued with Focus 3 (1972) and Hamburger Concerto (1974). Following their break up in 1978, Focus reunited in 1985, 1990, and 1999 before reforming in 2002. They continue to tour and release albums.

In 2010, "Hocus Pocus" was used as the theme for Nike's 2010 World Cup commercial Write The Future which renewed interest in the band.