The Rockin' in the Free World hit maker had announced earlier this month that he planned to kick of his Love Earth Tour in the eastern European nation on an unspecified date, but the ongoing war and changing political climate has made him rethink the decision due to safety concerns.
"Our concert in Ukraine is cancelled. We had a good venue, close to a shelter, but the changing situation on the ground was too much," Young wrote on his official website.
"I could not in good conscience take my crew and instruments into that area. My apologies to all. Ukraine is a great country with a good leader. Slava Ukraini."
The 79-year-old rocker had shared his plans to perform in Ukraine - which was invaded by Russia in 2022 - for the first time just two weeks ago.
A post on his website stated: "Neil Young and the Chrome Hearts will open the upcoming Love Earth Tour of Europe in Ukraine with a free concert for all.
"We are currently in talks and will make the announcement of details here ... Keep on Rockin' in the Free World."
His tour will start in Europe in June and July before heading to North America for a series of shows in August and September.
The trek will include a headline slot at the fabled Glastonbury Festival in the UK in June.
The Heart of Gold singer was confirmed as the first headliner for Glastonbury after reversing his decision to boycott the world-famous festival due to it being a "corporate turn-off".