"We can't allow our daughters to have fewer rights than their mothers and that's what's happening right now in Poland," said MEP Iratxe Garcia Perez.
Protests have raged in Poland following a court ruling that imposed a near-total ban on abortion.
Police have warned demonstrators that gatherings are banned under pandemic-era regulations.
"We must defend Polish churches, we must defend them at every price," Jaroslaw Kaczynski said, drawing condemnation from the opposition who accused him of "inciting civil war."
Latin America has some of the strictest abortion laws in the world, say activists.
The British province lifted restrictions on abortion and a ban on same sex marriage on Monday at midnight.