Katie MacAlister is a Seattle-area author known for her fiction and non-fiction works. Her most popular titles are in the genres of historical, contemporary, and paranormal romance. She also writes young-adult books under the pseudonym Katie Maxwell and mysteries under the pseudonym Kate Marsh.

MacAlister's contemporary and historical books frequently feature heroines who are flawed Anglophiles, often tall, Rubenesque, klutzy, or divorced. Their male counterparts are typically men who have had significant past experiences.

For as long as she can remember, Katie MacAlister has loved reading. Growing up in a family where a weekly visit to the library was a given, Katie spent much of her time with her nose buried in a book. Despite her love for novels, she didn't think of writing them until she was contracted to write a non-fiction book about software. Since her editor refused to allow her to include either witty dialogue or love scenes in the software book, Katie swiftly resolved to switch to fiction, where she could indulge in world building, tormenting characters, and falling madly in love with all her heroes.

Two years after she started writing novels, Katie sold her first romance, Noble Intentions. More than thirty books followed during the years after Noble Intentions.