Suddenly Susan is an American television sitcom that aired on NBC from September 19, 1996, to December 26, 2000. The series was created by Clyde Phillips and starred Brooke Shields in her first regular series. Shields played Susan Keane, a glamorous San Francisco magazine writer who begins to adjust to being single, and who learns to be independent minded after having been taken care of all her life. The series was developed by Gary Dontzig and Steven Peterman, who also served as executive producers during the first three seasons and was produced by Warner Bros. Television.

Susan Keane (Brooke Shields) has always been taken care of by someone else. She worked as a copy editor at The Gate, a fictional San Francisco magazine. On her wedding day, she realizes that she and her wealthy, vain fiancé, Kip, are not meant for each other and that there is more to life than just being known as the "s" in "The Kip Richmonds." She abruptly leaves him at the altar. Now, she's suddenly just Susan. Susan's parents (guest stars Swoosie Kurtz and Ray Baker) were less than ecstatic about their daughter deciding to end her engagement to Kip, though her grandmother and confidant, Nana (Barbara Barrie), stands as a pillar of support for Susan.

The day after the wedding, Susan goes to her boss, Jack Richmond (Judd Nelson), the rebellious brother of Susan's former fiancé, Kip, begging for her job back. Instead, Jack assigns Susan to write a regular column about being suddenly single. Susan's coworkers include photographer Luis Rivera (Néstor Carbonell), boyish rock music reporter Todd Stites (David Strickland), restaurant critic Vicki Groener (Kathy Griffin), and, in later episodes, investigative reporter and Susan's old enemy Maddy Piper (Andréa Bendewald).

In the show's final season, The Gate is taken over by Ian Maxtone-Graham (Eric Idle) and overhauled into a men's magazine that is run out of an old warehouse in Chinatown. Along with this, Ian brings his own team of workers, including executive assistant and U.S. Navy veteran Miranda Charles (Sherri Shepherd), sportswriter Nate Knaborski (Currie Graham), and freelancer photographer Oliver Browne (Rob Estes). Susan is faced with a new set of problems and has to prove herself all over again.

Besides the task of putting together a magazine and focusing on the lead character's life, Suddenly Susan also focuses on the private lives of many employees in the show.

In the show's original pilot, written by Billy Van Zandt and Jane Milmore and based on a dramatic script by Clyde Phillips, Susan worked at a publishing house editing children's books. After breaking up with her live-in boyfriend Ted (Brian McNamara), Susan finds herself "single" for the first time in years. Concurrently, Susan faces even greater challenges at work when her boss, Eric (Philip Casnoff), assigns her the task of working as an editor with Charlotte (Elizabeth Ashley), a hugely successful and highly opinionated romance novelist. Always on hand to provide support is Susan's grandmother, Nana (Nancy Marchand), her co-workers, acerbic best friend Marcy (Maggie Wheeler) and Neil (David Krumholtz), who has a crush on Susan.

When the series was picked up, former Murphy Brown writers/producers Gary Dontzig and Steven Peterman were brought in to redevelop the concept, being appointed as the show's co-showrunners. Other changes between the pilot and the series included Barbara Barrie replacing Nancy Marchand in the role of Nana, and Swoosie Kurtz and Ray Baker replacing Kurt Fuller and Caroline McWilliams as Susan's parents, Bill and Liz; the characters of Eric and Ted were reworked into the roles of Jack Richmond (played by Nelson) and his brother, Kip (Anthony Starke), whom Susan jilts during their wedding. (McNamara would later play Cooper Elliot, a friend of Jack's who briefly replaces him as publisher of The Gate through a poker game bet and takes Susan to Italy at the end of Season 1.) In the series, though the setting switches from a publishing house to a magazine, the main office set retained most of its features from the pilot; the most noticeable difference was that the elevator was at stage right. While the pilot's storyline featuring Elizabeth Ashley as one of the publishing house's clients was not used in the series, a cardboard cut out of Ashley that was featured in the pilot appears throughout the first three seasons of the show – it can be seen briefly behind Susan's desk, near the filing cabinets along the back wall.

The actual location for the exterior shots of the office was the Newhall Building at 260 California Street in San Francisco.