The Hokkaido Nippon-Ham Fighters (北海道日本ハムファイターズ, Hokkaidō Nippon-Hamu Faitāzu) are a Japanese professional baseball team based in Kitahiroshima, Hokkaidō. They compete in the Pacific League of Nippon Professional Baseball, playing the majority of their home games at ES CON Field Hokkaido. The Fighters also host a select number of regional home games in cities across Hokkaidō, including Hakodate, Asahikawa, Kushiro, and Obihiro. The team's name comes from its parent organization, Nippon Ham, a major Japanese food-processing company.

Founded in 1946, the Fighters called Tokyo home for 58 years, as co-tenants of the Tokyo Dome & Korakuen Stadium with the Central League's Yomiuri Giants near the end of their tenure in the capital city. The franchise has won three Japan Series titles, in 1962, 2006, and, most recently, 2016.