Armand Reclus (13 March 1843 – 9 January 1927) was a French naval engineer and geographer, known for his involvement in the development of the Panama Canal.

He graduated top of his class in the Imperial Naval College in 1862, and went on to take part in campaigns in the Pacific and in French colonial actions in Indochina.

Like his brothers, Élisée, Élie, Onésime, and Paul Reclus, Armand was a geographer and took part in the 1876–1878 exploration of the Darien with Ferdinand de Lesseps.

The route for the Panama Canal that he proposed was adopted by the International Geography Congress in 1879, and he directed the drilling site as the project began.

In the following years, he participated in several campaigns in the China Seas and the Japan, took part in colonial conquests in Indochina, and took the opportunity to learn Chinese.

In 1875, on a reconnaissance mission in the Baltic Sea, he was arrested by the Germany and spent five months in prison for having drawn coastal fortresses without authorization.

[16] In the tropical forest, Reclus took notes, made surveys, and created maps to determine the optimal route for the future Panama Canal.

Armand Reclus presented the Panama Canal project at the International Congress of Geography held in Paris in 1879.

[25] The last of the five Reclus brothers still alive, he died in Eynesse on January 9, 1927, and was buried in the family cemetery on the edge of a plot of vines, at Jarnac.