Etchūjima Park, Urban park in Kōtō, Japan.

Etchūjima Park is a long, narrow ward-run park in Etchūjima 1-chōme, Kōtō, opened on 1 April 1971 along a branch of the Sumida River, running from the Ōshima River water gate south to the Aioi Bridge on Kiyosumi-dōri. Its grounds are divided into three main levels, effectively four because the lowest level has a further step; the upper three are linked by slopes and barrier-free. The top level holds a main path with a small traffic signal and lane markings for children learning to cycle, a sandbox and a paddling pool.

Etchūjima Park opened on 1 April 1971 as a ward-run park on a branch channel of the Sumida River, running north from the Ōshima River water gate to the Kiyosumi-dōri crossing at Aioi Bridge. Its three terraces, linked by slopes, were built along the embankment of Etchūjima 1-chōme in Kōtō ward.

Cherry trees are planted in the park, and their blossoms are enjoyed in spring. The lower terrace is reached by the canal water at high tide or after heavy rain, and yakatabune pleasure boats can be seen passing on the waterway. The park is also a starting point for a loop walk of about 40 minutes linking Aioi Bridge, Ishikawajima Park, Chūō Bridge, Shinkawa Park and Eitai Bridge.

The park sits near Etchūjima Station on the Keiyō Line, with several entry points, benches, and well-maintained walkways throughout the grounds. Easy access makes it simple to visit at any time and move around the facilities.

The lowest of the park's four terrace levels floods when canal boat wakes, high tide or heavy rain push water over the bank, so the water there can be touched but is not clean. A landing stage for the Tokyo Waterfront Line water bus sits beside it, and a no-entry waterfront terrace runs along the edge.