Chigasaki (茅ヶ崎市, Chigasaki-shi^?) is a city located in central, Kanagawa Prefecture, Japan. As of 2010, the city had an estimated population of 234,400 and a density of 6,540 persons per km². The total area is 35.71 km².

Chigasaki is located on the eastern bank of the Sagami River in south-central Kanagawa Prefecture, facing Sagami Bay on the Pacific Ocean to the south.

The area around Chigasaki has been inhabited since prehistoric times. The area was largely pasture and farmland well into the Edo period. The Tōkaidō connecting Edo with Kyoto passed through what is now Chigasaki, but without a post station. The area was part of the tenryō territory in Sagami Province controlled directly by the Tokugawa Shogunate through the Edo period.

After the start of the Meiji period, the Tōkaidō Main Line railway connected Chigasaki Station with Tokyo and Osaka in 1898, which spurred the development of the area. Chigasaki village in Kōza District, Kanagawa Prefecture became Chigasaki town in 1908. In 1921, the Sagami Line railway connected Chigaskai with Hashimoto to the north. Chigasaki became a city on October 1, 1947.