...

[Qemo]

...

 

Haven't personally seen it but it's super popular in Japan Detective Conan

 

@Qemo

91 Days - mafia/detective style anime. MC basically joins mafia to find who killed his family. really good.

beautiful bones sakurako's investigation - this is detective style anime but its about using bones to find clues rather than normal stuff aka anthropology. still really good.

erased - extremely good mystery anime. there is supernatural stuff in it where MC goes back in time to basically be a detective and find out what happened and what led up to the present events and to change it.

acca:13 territory inspection dept. - highly recommend this anime. mystery anime but the MC is basically a detective

 

[Cakeboost]

Detective Konan
Gosick
Haruhi Suzumiya no Shoushitsu (good one)
UN-GO
Huoyka

 

[S]

Death Note and Code Geass. Both have some fantasy element to it, but the underlying theme is the intelligence of the characters, and their use of it.

 

[Artemarkantos]

Detective Konan
and
Death note (not really detective anime) but it good

 

[ratedgamerman]

Detective conan has over 900 episodes so might take you a while to finish.

 

Ima second

death note
erased
Code geass

 

[Psycho_]

Although it's not anything close to realistic, I would have to agree with a few prior posts and suggest watching Death Note. It's the first anime to come to mind when I think of a detective anime.

 

91 days - I don't like much detective animes although 91 days surprised me

 

[Cakeboost]

lol, last night i just started watching 91 days

 

[lofiaddict1]

Death Note, Zankyou No Terror, Code Geass. One Outs (not a detective anime but very very intelligent$