Omatsuzaki is a beach that lies in North Komatsu, Shiga town, Shiga prefecture. It is a crescent shaped sand bar situated on the northern side of the Hira river mouth. It also bulges along the eastern side of Lake Biwa.

Omatsuzaki is chosen as one of the 8 scenic spots of Lake Biwa, and is known as 'Cool Breeze - Omatsuzaki White Beach'. The depth of the water suddenly changes, and the water – so clear it's as if one could catch a fish by hand – stretches far out. The view of white sand and green pines, spreading for 3km with the Hira mountain range as its backdrop, is just magnificent.

Omatsuzaki has been known as a scenic spot since olden times. In summer, it becomes the number-one leisure venue for Lake Biwa. At that time, it is crowded with people enjoying sports such as windsurfing and swimming. Omatsuzaki-no-hakutei is a scenic area that catches the heart of visitors.