Lennépark, Public park in Frankfurt (Oder), Germany.

Lennépark is a public park in Frankfurt (Oder), Germany, 8.9 hectares in size, about 900 m long and 95 m wide, laid out in the English style. It has an artificial waterfall, a flowing stream, a fountain and ponds, and is divided by Rosa-Luxemburg-Straße. In the former rampart area the ground rises about ten metres.

The park was constructed between 1834 and 1845 on the grounds of former fortifications and ranks as Germany's second oldest public park. It was designed by renowned landscape architect Peter Joseph Lenné, whose name it still bears today.

The park is named after its designer, Peter Joseph Lenné, who sent his site plan from Potsdam in 1835. Among its monuments are a Karl Marx memorial and a statue of a naked boy. A memorial to the victims of fascism stood at the southern entrance from 1949 until it was removed in 1986.

The park is accessible through multiple entrances and can be easily reached from the city center, offering plenty of space for walking and exploring along its trails. The best time to visit is on warm days when the water features and green areas are most inviting.

The oldest tree in the park is an oak that the lecturer Friedrich Schmeißer bought for two talers during the 1830s fundraising, saving it from being felled. It still stood in 2018. The northern section, rebuilt from 2020 to 2021, follows Lenné's model of an Italian mountain landscape, with the main path narrowed from 8 to 3 metres.