Dublin City Council has been asked to remove threatening graffiti targeting the Taoiseach immediately.
The death threat, which appeared on a wall opposite the Blackhorse Luas Stop near Drimnagh and misspells Mr Varadkar's surname, reads: 'Kill Leo Veradkar, He sold out the Irish.'
Mr Varadkar is also branded an 'EU puppet' in the graffiti.
The Taoiseach said before Christmas he wouldn't change his lifestyle despite being warned of a risk to his safety from far-right extremists.
Local Sinn Féin councillor Daithí Doolan said the graffiti is sinister.
"I live across the road from where that graffiti appeared, and it is very sinister," Mr Doolan told Newstalk.
"It's promoting a death threat on An Taoiseach Leo Varadkar.
"While I share no politics with Leo Varadkar or the current Government, I think graffiti offers no solution. It's cheap, it's nasty, it's vindictive.
"If people want real change then they should become active in their community and work together and bring about the change we all want.
"This graffiti does none of that and does not represent the good people of Drimnagh and Inchicore."
