The visit includes meetings with Polish President Andrzej Duda, Foreign Minister Radosław Sikorski, lower-house Speaker Szymon Hołownia, several government ministers and other political leaders.
She also plans to meet with Belarusian activists living in Poland.
"We have a deep bond with Poland, a common history and a shared future," Tsikhanouskaya wrote on the X social media platform ahead of the visit.
She added that her talks with Polish leaders would focus on "support for Belarusian political prisoners, civil society and independent media."