  In this chapter, we discuss explicit black hole solutions in higher-order
scalar-tensor theories. After a brief recap of no-hair theorems, we start our
discussion by so-called stealth solutions present in theories with parity and
shift symmetry. Stealth solutions are such that their metric are Ricci flat
General Relativity solutions, but they are accompanied by a non-trivial scalar
field, in both spherically-symmetric and rotating cases. The stealth metrics
then enable to construct an analytic stationary solution of scalar-tensor
theory which is called disformed Kerr metric. This solution constitutes a
measurable departure from the usual Kerr geometry of GR. We discuss within
parity and shift symmetric theories several non-stealth solutions. We then
consider scalar-tensor theories stemming from a Kaluza-Klein reduction of a
higher-dimensional Lovelock theory. These theories encompass all Horndeski
functionals and hence go beyond parity and shift symmetry. Reduction and
singular limits allow one to obtain non-stealth black holes with differing
interesting properties which are not Ricci flat metrics. We analyse the
solutions obtained and classify them with respect to the geometry of the
internal space according to their Kaluza-Klein origin.
