Hamamatsu

is a city located in western Shizuoka Prefecture, Japan. In September 2023, the city had an estimated population of 780,128 in 340,591 households, making it the prefecture's largest city, with a population density of over the total urban area of . The city ranked first in the happiness index of Japan's government-designated cities, published by the Japan Research Institute, in both 2018 and 2022.

thumb|Hamamatsu-juku in the 1830s, as depicted by Hiroshige in [[The Fifty-three Stations of the Tōkaidō]] was the twenty-ninth of the fifty-three stations (shukuba) of the Tōkaidō. It is located in what is now Hamamatsu's Chūō-ku in Shizuoka Prefecture, Japan.