  Non-decoupling effects of heavy particles present in beyond-the-standard
models are studied for the triple gauge boson vertices $\gamma W^+W^-$ and
$Z^0W^+W^-$. We show from a general argument that the non-decoupling effects
are described by four independent parameters, in comparison with the three
parameters $S$, $T$ and $U$ in the oblique corrections. These four parameters
of the effective triple gauge boson vertices are computed in two
beyond-the-standard models. We also study the relation of the four parameters
to the $S$, $T$, $U$ parameters, relying on an operator analysis.
