17, is a one-act comic opera in 16 scenes by Czech composer Antonín Dvořák.

The opera was staged very rarely during Dvořák's lifetime; nonetheless, it later became part of the standard Czech operatic repertoire.

The young pair refuses to obey their parents and the cunning Řeřicha tries to find a way out.

Řeřicha's successful trick spreads fast through the village and the parents become targets of ridicule.

Finally, Řeřicha admits he set the trap only for the sake of uniting the "stubborn lovers", and everything concludes in a happy ending.