Loki-Schmidt-Garten, Botanical garden in Klein Flottbek, Germany.

Loki-Schmidt-Garten is the University of Hamburg's botanical garden on about 25 hectares in Osdorf, beside Klein Flottbek station. Its outdoor grounds are divided into a systematic garden of some 90 beds arranged by evolutionary relationship, a geographical section with Japanese and Chinese gardens, and a plant-and-man section. The tropical greenhouses remain at the old site in Planten un Blomen.

The garden was founded in 1821 by Johann Georg Christian Lehmann and became a state institute in 1857. It joined the University of Hamburg in 1919, but the move to the current 25-hectare site in Osdorf was decided in 1970 and built from 1971; the new garden opened on 5 July 1979. It was renamed Loki-Schmidt-Garten on 23 October 2012 after Hannelore "Loki" Schmidt.

The garden is named after an environmental advocate and functions today as a place to learn about plants from different regions of the world. The collections are arranged by geography, so a stroll takes you on a journey across continents.

The garden is open daily and free of charge, with no parking on the grounds; visitors arrive via Klein Flottbek station, whose second name is "Botanischer Garten". The main path circles a water feature counterclockwise, passing crops, poisonous plants, desert, rose and rock gardens before branching toward the Museum Loki Schmidt Haus and the entrance.

The garden's site was once part of Norderpark, one of four sections of Caspar Voght's ornamented farm; its counterpart, Süderpark, is today's Jenischpark. The nearby S-Bahn station Klein Flottbek still carries the secondary name "Botanischer Garten", a reminder of the garden's former name.