Abdoulaye Bathily was appointed to the role in September 2022. It was not immediately clear when he planned to step down.
"As far as I am concerned I have done my best," Bathily told reporters at the United Nations in New York after briefing the U.N. Security Council on the situation in Libya.
Libya has had little peace or stability since a 2011 NATO-backed uprising, and it split in 2014 between eastern factions in Benghazi and western factions in Tripoli, with rival administrations governing in each region.
Efforts to persuade the rival factions to hold elections have been the main focus of diplomacy for years, but there has been little progress since a 2020 ceasefire that paused most major warfare.
"Since the end of 2022, the United Nations-led efforts to help resolve Libya's political crisis through elections faced national as well as regional pushbacks, revealing an intentional defiance to engage in earnest and a tenacity to perpetually delay elections," Bathily told the Security Council.
"The renewed scramble for Libya, its position and immense resources among internal and external players is rendering a solution ever elusive," he said.
(Reporting by Michelle NicholsEditing by Gareth Jones)
By Michelle Nichols
