Obsidian Order personnel
Operatives of the Obsidian Order.

Named 
Dejar
Elim Garak
Enabran Tain
Entek
Iliana Ghemor
Korinas
Yteppa

Unnamed

Former heads of the Obsidian Order 
Aside from Enabran Tain, no other head of the Obsidian Order had ever lived long enough to retire. ()

Tain's former advisors 
In 2371, five former Obsidian Order operatives died on the same day Garak's Clothiers was bombed; three from natural causes, two in accidents. A Cardassian informant of Odo's relayed the information to him, implying that their deaths were no coincidence and that Romulans might have been involved. He suggested Odo ask Garak why they might have been killed. 

When Odo showed Garak the names of these individuals, Garak was not upset about their deaths and said if circumstances were different, he'd be celebrating. He finally identified them and himself as Enabran Tain's most trusted advisors for a time, and believed that even though he didn't know why they had been targeted, Tain might. ()

Personnel lists
Unnamed Cardassians