List of characters who know Conan is Sleeping Kogoro
People who know Conan is Sleeping Kogoro
Confirmed
Everyone on the List of characters who know Conan's identity that is confirmed.
Jodie Starling She knows about the Stun Gun Wrist Watch, and Voice Changing Bow Tie, and was aware Conan was the one doing the actual investigating since her introduction case. Any doubts about this should be immediately cleared up during the second case she was in, when she fully trusts Conan's plan and was clearly aware he was working on a way to resolve the situation from the beginning.
Suspected/Likely/Unconfirmed
The National Police Agency
The FBI
The CIA
Ran Mouri Inspector Otaki His involvement in both the Tiger Scroll Case and the Koshien Bomber case at the very least should make him suspicious and knowledgable that Conan is incredibly intelligent, as he does not question how or why Conan was so involved with both cases. Additionally, he has been around them long enough to reason he sees their detective skills as equal. Additionally, Conan makes little to no effort to hide it from him.