The eastern European nation is currently under attack from Russian forces.
Leicestershire's County Hall will be illuminated in Ukraine's national colours from this evening.
The County Council’s Glenfield headquarters is being flood-lit tonight, along with other public buildings and landmarks across the country and the world, in the colours of the Ukrainian national flag.
Russian military forces have invaded Ukraine and are attacking locations across the country including the capital Kyiv.
County council leader Councillor Nick Rushton said: “There is an appalling situation unfolding in Ukraine as Russian forces continue the assault on a peaceful democratic country.
“It may be a small gesture but we want Ukrainians to know that they are in the thoughts of the people of Leicestershire.
“We can only hope that the violence and suffering caused by this terrible and illegal invasion end soon.”