Lukoil's website shows the board now consists of eight members, whereas it had 11 directors before, Interfax said.
The list had included Roger Mannings, the chairman of the Russo-British Chamber of Commerce; Toby Gati, president of TTG Global LLC and Wolfgang Schussel, ex-chancellor of Austria.
But those three individuals are not on the board now, according to Lukoil's web site.
Lukoil declined to comment.
(Reporting by Reuters)