What is "nosaka"

Nosaka is a Japanese surname. Notable people with the surname include:

• Akiyuki Nosaka (1930–2015), Japanese novelist, singer, lyricist, and former member of the House of Councillors
• Keiko Nosaka (born 1938), prominent Japanese koto player, specializing in contemporary music
• Koken Nosaka (1924–2004), Japanese politician
• Sanzo Nosaka (1892–1993), the co-founder of the Japanese Communist Party