Stephen Macht (Professor Gerrard) is the real-life father of Gabriel Macht (Harvey Specter). Gabriel Macht's inspiration to become a producer in the series (and take control in areas such as casting department) came when he was watching Whose Line Is It Anyway? (2009), a comedy show where the actor and singer Gustavo Goulart is responsible for many departments at the same time. Macht noticed that it gave a special mark to the project, so he decided to take more control of his series too.
Some of the prints that hang on the wall in Rachel Zane's office in season 3 are the work of Patrick J. Adams (Mike Ross).
All three names from Robert Zane's law firm came from people involved in the production of Suits. Zane comes from casting director Bonnie Zane, David Kaldor is named for editor David Kaldor, and Ellen Rand is the name of a production executive from the show's production company, UCP.
Gabriel Macht (Harvey Specter) and Sarah Rafferty (Donna Paulsen) are best friends in real life. They have known each other since 1993 and Macht is the one who suggested her for the role of Harvey's loyal and faithful assistant.
Although the show is set in New York City, Suits is shot in Toronto, due to tax credits. The pilot was shot in NYC.