From Japanese 愛久沢 (Akuzawa) meaning "Akuzawa", a former large village in the former Japanese province of Kaga in parts of present-day Ishikawa, Japan. 愛久澤 is a variant spelling of 愛久沢.
From Japanese 阿久沢 (Akuzawa), a variant spelling of 悪沢 (Akuzawa) meaning "Akuzawa", a division in the area of Azuma in the city of Midori in the prefecture of Gumma in Japan. 阿久沢, 阿久澤, 安久沢, 安久澤, 愛久沢, 愛久澤, 悪沢, 悪澤, are variant spellings of 阿久沢.