Twitter

Brian Blogs Agents of S.H.I.E.L.D. Official Twitter - @BrianBlogsAoS

Cast:
Clark Gregg - @clarkgregg
Ming-Na Wen - @MingNa
Chloe Bennet - @ChloeBennet4
Elizabeth Henstridge - @Lil_Henstridge
Brett Dalton - @IMBrettDalton
Iain de Caestecker - @IdeCaestecker*

Guest Cast
Cobie Smulders - @CobieSmulders
J. August Richards - @jaugustrichards
Samuel L. Jackson - @SamuelLJackson

Crew:
Joss Whedon - @JossActual
Jed Whedon - @jedwhedon
Maurissa Tancharoen - @MoTancharoen
Bear McCreary - @bearmccreary

Other:
Agents of SHIELD - @AgentsofSHIELD
S.H.I.E.L.D. TV (fansite) - @SHIELDtv
ABC Network - @ABCNetwork
ABCPublicity - @ABC_Publicity
Marvel Entertainment - @Marvel
Stan Lee - @TheRealStanLee
The Avengers - @Avengers

*Not currently in use.