Tusk is scheduled to hold talks with Lithuanian Prime Minister Ingrida Šimonyte in the morning and President Gitanas Nauseda in the afternoon.
Strengthening and implementing sanctions against Russia and Belarus is expected to be high on the agenda of the talks in Vilnius, in addition to preparations for a NATO summit in Washington, as well as bilateral issues such as cooperation in energy and transportation.
Lithuanian media have reported that Tusk's visit to Vilnius coincides with a farmers' protest at the Polish-Lithuanian border in Budzisko.
Lithuanians are concerned that the main road leading into their country may be blocked due to the protest.
Polish farmers protested on the border with Lithuania on Friday against what they say are imports of Ukrainian grain through the Baltic country, something Vilnius denies.
The Budzisko crossing is used by vehicles carrying goods to and from Latvia and Estonia.
Farmers across Europe have been protesting for weeks against constraints placed on them by EU regulations meant to tackle climate change, as well as rising costs and what they say is unfair competition from outside the EU, particularly Ukraine, the Reuters news agency has reported.
The EU has waived quotas and duties on imports from Ukraine after Russia's invasion in 2022, angering farmers from neighbouring Poland, Hungary and Slovakia who say it undercuts their prices, according to Reuters.
Polish farmers argue that some Ukrainian grain which is brought to Lithuania is later re-exported to other countries as European grain.
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Source: IAR, PAP, Reuters