EU sanctions three firms for breaking Libya arms embargo
Foreign ministers signed off on the measures, which freeze any EU assets held by the companies, cut them off from EU finance markets and bar them from doing business with anyone in the bloc, at a regular meeting in Brussels.
Two individuals were also hit with sanctions for human rights abuses in Libya, where the UN-recognised government in Tripoli has been under attack from strongman Khalifa Haftar, who runs a rival administration in the east.
"These new listings show the EU's strategic use of its sanctions regime and ability to react to developments on the ground in support of the political process and to deter past and present perpetrators from further violations," the EU said in a statement.
Libya has endured almost a decade of violent chaos since the 2011 NATO-backed uprising that toppled and killed veteran dictator Moamer Kadhafi.
But there have been signs of progress, with representatives from the two sides meeting for peace talks in Morocco, announcing a surprise ceasefire and pledging national elections.
"After many months I see a reason for cautious optimism. There is a positive momentum, there is a ceasefire and we need to use it," EU diplomatic chief Josep Borrell said as he arrived for the foreign ministers' talks.
But the targeting of a Turkish company risks inflaming already tense relations between Ankara and the EU following a recent flare-up in the eastern Mediterranean over oil and gas reserves.
The other two companies affected were Kazakh cargo air operator Sigma Airlines and Jordanian maritime firm Med Wave Shipping.