Igor Stassanov (French: Yegor Stassanow) is a Syldavian ambassador who appears in King Ottokar's Sceptre in The Adventures of Tintin series. Although not seen mostly in the series, he was mentioned on top of the notebook Tintin was holding after the fall of Z.Z.R.K as it was revealed that Stassanov is part of the group.
According to the bio in the notebook, Stassanov is a very close friend of Alfred Alembick as he met him in Belgrade in 1913 at the Sigiliograpical Congress of the ISA (International Sigilographical Association). He also gave Alembick the letter of the introduction to study at the national archives in Klow. He was presumably arrested for the corruption as part of the plot to steal the Ottokar Sceptre.