The talks also focused on Polish investment in Ukraine, ballistic missile defence and continued support for Ukraine against Russia's invasion, Tusk said.
"President Volodymyr Zelensky informed me about the course of talks in Washington," Tusk wrote on social media.
"We also discussed Polish investment in Ukraine, anti-ballistic cooperation, and support for Ukraine in its fight against Russian aggression," he added.
'Anti-ballistic defence is a key priority': Zelensky
Zelensky wrote on Facebook that he and Tusk discussed a wide range of bilateral issues, including historical dialogue between the two countries.
"I told him about our diplomatic work in Washington," Zelensky said. "We also talked about defence cooperation and priority issues for protecting our cities and communities from Russia's brutal strikes."
He added: "Anti-ballistic defence is a key priority. Security and protection of Ukraine is also a matter of security and protection for Poland. Our cooperation strengthens both our region and all of Europe."
The Ukrainian leader said the talks also covered the safety of Ukrainians who fled the war and found refuge in Poland.
"It is important that Ukrainians who have left their homes because of the war and found shelter in Poland feel safe," he wrote.
Zelensky visited Washington on Tuesday to attend the funeral of Republican Senator Lindsey Graham and hold talks with US officials and lawmakers.
He later told broadcaster Fox News that Trump had agreed to grant Ukraine a licence to produce Patriot air defence missiles.
"I hope we will launch joint production," Zelensky said.
Patriot systems are considered a key component of Ukraine's air defences against Russian ballistic missiles.
Last week, Polish Deputy Defence Minister Magdalena Sobkowiak-Czarnecka said Warsaw had proposed joint production of Patriot missiles with the United States and Ukraine.
Speaking after meetings with US officials in Washington, Sobkowiak-Czarnecka said she had presented the proposal to her counterparts at the Pentagon and the State Department.
"We proposed trilateral cooperation involving the United States, Ukraine and Poland because the goal is to ensure that this production takes place in a safe location," she said.
Polish Deputy Defence Minister Magdalena Sobkowiak-Czarnecka. Photo: Polish Radio/PR1
She was referring to comments by Trump at last month’s NATO summit in Ankara that Washington was considering establishing a Patriot production facility linked to Ukraine.
Sobkowiak-Czarnecka also said Poland was seeking to host a regional maintenance and service hub for Patriot systems, citing the country's expanding defence industry and its strategic position on NATO's eastern flank.
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Source: IAR, PAP