Sodium tert-butoxide (or sodium t-butoxide) is a chemical compound with the formula (CH)CONa (abbr. NaOtBu). It is a strong, non-nucleophilic base.  It is flammable and moisture sensitive. It is sometimes written in the chemical literature as sodium t-butoxide.  It is similar in reactivity to the more common potassium tert-butoxide.
The compound can be produced by treating tert-butyl alcohol with sodium hydride.