The two-time Rugby World Cup winner has come off the bench for the last half an hour as Toulouse have beaten La Rochelle 18-8 in the final at the Stade de France.
Kaino, 38, also helped Toulouse beat the same opposition in the European Champions Cup final last month.
First-five Thomas Ramos kicked 15 of their points in the Top 14 decider l in place of the injured Romain Ntamack, while Springboks winger Cheslin Kolbe struck a stunning 50-metre drop goal.
