  The double Higgs production in the models with isospin-triplet scalars is
studied. It is shown that in the see-saw type II model the mode with an
intermediate heavy scalar, $pp\to H+X\to 2h+X$, may have the cross section
which is compatible with that in the Standard Model. In the Georgi-Machacek
model this cross section could be much larger than in SM since the vacuum
expectation value of the triplet can be large.
