  We review the role of a muon collider in the study of Higgs bosons via
production in the s-channel. Very precise measurements of a Standard Model-like
Higgs boson mass and total width can be performed, and may lead to a
discrimination between a Standard Model Higgs boson and the light Higgs boson
of the minimal supersymmetric theory. The heavier Higgs bosons from a
supersymmetric theory or an exotic Higgs sector can be studied in the
s-channel. A muon collider may play a crucial role in separating the
overlapping signals for two heavy nearly degenerate Higgs bosons, and may play
an important role in precision tests of radiative corrections in the Higgs
sector. The measurements at a muon collider will be complementary to the Higgs
studies at the Large Hadron Collider and at an electron-positron Linear
Collider.
