  We derive the twist-3 gluon fragmentation function (FF) contribution to the
transversely polarized hyperon production in semi-inclusive deep inelastic
scattering, $ep\to e\Lambda^\uparrow X$, in the leading order (LO) with respect
to the QCD coupling in the framework of the collinear twist-3 factorization.
Together with the known result for the contribution from the twist-3
distribution in the proton and the twist-3 quark FFs for the hyperon, this
completes the LO cross section for this process. The constraint relations among
the twist-3 FFs are taken into account. The formula is relevant to large-$P_T$
hyperon production in the future Electron-Ion-Collider experiment.
