The US House speaker met Ukraine’s president during a visit to the country’s embattled capital, Kyiv.
The visit of Pelosi, second in line to the presidency after the vice-president, marks a major show of continuing support for the country's struggle against Russia.
Footage released early on Sunday by Zelenskiy's office showed Pelosi in Kyiv with a congressional delegation including representatives Jason Crow, Jim McGovern and Adam Schiff.
Pelosi told Zelenskiy: 'We are on a frontier of freedom and your fight is a fight for everyone. Our commitment is to be there for you until the fight is done'