It was previously announced that a future instalment would be a nod to recent film The Social Network.
Entertainment Weekly now reports that Abraham will appear in the episode as Burl, the "smug but friendly" head attorney at a film conglomerate.
The actor is known for his role in the 1984 film Amadeus and has made recent guest appearances in episodes of Law & Order: Criminal Intent and Bored to Death.
Wilson will play Viola, a top lawyer and old friend of Diane (Christine Baranski), who "brims with power and self confidence".
The star has appeared in such films as Sleepless in Seattle and Runaway Bride. Her television roles include appearances in Curb Your Enthusiasm and Frasier.
The Good Wife episode is expected to air in February on CBS.