Jardin botanique de Cayenne, Botanical garden in Cayenne, French Guiana.

The Jardin botanique de Cayenne is a botanical garden in Cayenne that spans roughly three hectares and holds numerous tropical plants along with flowering trees of different sizes. It sits at the end of Avenue Charles de Gaulle and displays hundreds of species found across the region.

The garden was created in 1879 by the Conseil général to replace, on a smaller scale, the Jardin royal des Plantes. That earlier garden, founded in 1820 by the colonial administration, became the Baduel nursery in 1840 and was later abandoned because its 11-hectare operation yielded too little. The present garden covers 3 hectares. On 10 June 2017 the Mémorial des Libres et Citoyens de 1848, made of 42 enameled-lava totems, was inaugurated here.

The garden holds a statue of Gaston Monnerville (1897–1991), the politician born in Cayenne. Since 10 June 2017 it also holds the Mémorial des Libres et Citoyens de 1848: 42 totems of enamelled lava bearing the names of the 13,043 slaves freed by the decree of 27 April 1848. The municipality holds a commemorative ceremony here each 10 June.

The garden lies at the end of Avenue Charles de Gaulle, next to the university, in central Cayenne. It covers 3 hectares, with a paved circle of reddish-brown brick rings around a round bed, tiered shrubs beside it and a narrow concrete path leading off. The grounds are laid out for strolling.

On 10 June 2017 a memorial was inaugurated here: 42 totems of enamelled lava bearing the names of the 13,043 enslaved people freed by the decree of 27 April 1848. The town hall holds a commemorative ceremony at the garden each 10 June.