Last name Одзава (小川 
, Ozawa 
, 小澤 , and others...) , around the world, is a common family name. The family name Одзава is habitual in Hong Kong, where it is quite a rare surname, Japan, where it is a rare surname, and Singapore. In absolute terms, the name is most common in China, Indonesia, and Japan. More prevalently, Одзава is the forename as well as the last name.