Police in a Canadian city are reminding the public that being a "grinch" may be frowned upon, but not illegal, after receiving calls over anti-Santa signs.

The signs appeared on a house window along a Santa Claus parade route over the weekend in Brantford, 103 kilometres (64 miles) west of Toronto. They read: "Santa is fake" and "Your parents are Santa", images on social media showed.

Police said they received "a few calls from upset residents" over the signs, and the individual responsible was asked to take them down.

They added that while the signs were not illegal, embracing the festive season is encouraged.

"While it isn't illegal to be a 'Grinch', we do encourage everyone to embrace the spirit of the season and help foster a positive, welcoming community, especially during events like the Santa Claus Parade," a police spokesperson said.