The money will help prevent the city's domestic violence prevention program from becoming the victim of budget cuts.
"Domestic violence touches everybody's lives," said Constant. "It doesn't affect just one socio-economic neighborhood or one race or one religion."
Their announcement coincided with a domestic violence training day for Santa Clara County Law Enforcement.
Councilmember Donald Rocha and Mayor Chuck reed are also each contributing $7,500.
Without the donations, the domestic violence program would have run out of money on Friday.
"We're going to have to do a little more scrimping than we usually do," said Pyle, "but we'll make it happen and this is an over-riding need."
Pyle and Constant are co-chairs of San Jose's domestic violence advisory board.