At some point, William Shakespeare wrote the plays A Midsummer Night's Dream, Richard III, and Hamlet.
In 1895, Shakespearean actor Henry Stein quoted Shakespeare while capturing Nate Heywood. He was also known to star in the play Richard III.
In October 2012, Felicity Smoak referenced Hamlet when telling Oliver Queen she doesn't want to get involved in his potential "Shakespearean family drama". Oliver, not getting the reference, stated he didn't study Shakespeare in any of the four colleges he dropped out of.
In 2014, A Midsummer Night's Dream was performed in Fox Theatre in Atlanta during the incident with a supposed viral outbreak (actually a possession by demon Mnemoth).