Andrew Grant "Andy" Peterson (born 1958) is an American novelist best known for his espionage thrillers, the Nathan McBride series, published by Thomas & Mercer. His books are available in print, eBook, and audio, and are being translated into German.

Born and raised in San Diego, California, Andrew attended La Jolla High School before enrolling at the University of Oklahoma, where he earned a Bachelor of Science Degree in Architecture.

At a very young age, he won his first pellet gun shooting competition at summer camp.

His early fascination with rifles became a life-long devotion to excellence in marksmanship with high-power rifles.

He has won numerous competitions throughout the Southwestern United States, including a gold medal at the 1995 Excellence in Competition match at the Nevada State Championship, and a first place victory at the 1994 Arizona State Championship, 1,000 Yard Service Rifle Match.

Currently, Andrew holds the classification of Master in the NRA’s High Power Rifle ranking system.

Andrew began writing fiction in 1990.

He sold a short story, Mr. Haggarty’s Stop, to San Diego Writers Monthly in October, 1992.

He continued to write, exploring both the novel form and screenplays.

After attending his first writer’s conference in 2005, he became serious about writing the Nathan McBride stories.

"First to Kill" is Andrew’s debut thriller which features Nathan McBride, the trained Marine Corps scout sniper and CIA operations officer. It launched as a mass-market paperback from Leisure Fiction in 2008. Costco Wholesale made a regional purchase of "First to Kill" and carried it in 97 warehouses in five western states, CA, AZ, CO, UT, and NV. Over a three-week period, Andrew visited 91 Costco locations where he signed stock and spoke with members.

While on his book signing tour, Andrew took time to visit VA hospitals and sit with USA military veterans.

He gave away hundreds of books.

In Phoenix, he had met a Pearl Harbor Survivor and one of the last remaining Navajo code talkers.

To date, Andrew has donated over 2,000 books to USA military personnel.

Shortly after "First to Kill" was sold, Audible.com. Dick Hill (the voice of Jack Reacher and Harry Bosch) was cast as the narrating voice for the audiobook.

Andrew’s second Nathan McBride novel, "Forced to Kill", launched as an exclusive audiobook in May, 2010, from Audible.com.

It was also released as a Kindle eBook and trade paperback.

In August of 2012, Thomas & Mercer, Amazon’s Publishing’s mystery/thriller imprint, purchased the rights to all three Nathan McBride books. "Option to Kill", the third in the series, launched as an exclusive Kindle eBook and was included in Amazon’s new Kindle Serials project. As "Option to Kill" was being written, episodes were being released over a fourteen week period. Like the first two books, it is now available as a completed Kindle eBook, Audible.com audiobook, or trade paperback.

Early in January 2013, Andrew signed on with Thomas and Mercer and has been working on several new books in the ongoing series.

His breakout novel, and the first in the Nathan McBride series, "First to Kill", was nominated for the "First Mystery" award by RT Book Reviews in 2008.

In 2015, Andrew received the La Jolla Writer's Conference "Person of Letters" award.