Dibutylmagnesium is an organometallic chemical compound of magnesium.

The pure substance is a waxy solid.

[3] The compound can also be prepared by hydrogenation of magnesium, followed by reaction with 1-butene.

[1] It is also possible to prepare dibutylmagnesium using 2-chlorobutane, magnesium powder, and n-butyllithium.

[4] Dibutylmagnesium is used as a convenient reagent for the preparation of organomagnesium compounds.