Tris(trimethylsilyl)methane is the organosilicon compound with the formula (tms)3CH (where tms = (CH3)3Si).

It is a colorless liquid that is highly soluble in hydrocarbon solvents.

Reaction of tris(trimethylsilyl)methane with methyl lithium gives tris(trimethylsilyl)methyllithium, called trisyllithium: Trisyllithium is useful in Petersen olefination reactions:[2] Trisyllithium is also a source of the bulky trisyl ligand.

Some tris(trimethylsilyl)methyl derivatives are far more stable than less substituted derivatives.

[3] [(Me3Si)3CTl]4 is a rare example of a robust organothallium(I) compound.