Yep. James Bond was created by British thriller writer Ian Fleming in the 1950s. He even co-wrote on of the first screen treatments for a Bond movie, though the project fell apart and the treatment became the novel Thunderball instead, which then became the basis for two movies (Thunderball and Never Say Never Again). His estate has commissioned novels from several other writers since, including one from Kingsley Amis, a large number (forget how many) from John Gardner, a smaller number from Raymond Benson, and then some standalones from a variety of authors since the Benson series ended.
en.wikipedia.org
I was for a time. Saw my first Bond movie as a kid, maybe 11 or 12, and then read the Fleming and Gardner novels throughout high school and university. I was often in the theater for new 007 films on opening night and caught up with the older ones via television and home video. I kind of fell off the bandwagon during the Brosnan years and have not gone back. I like what I've heard about the Craig movies so have good intentions about getting caught up, maybe before they finally announce the next Bond.
In terms of the books, I've read all of Fleming, most of Gardner, and some Benson. Have not tried any of the post-Benson standalones, though some are by fairly reputable crime and thriller authors so could be good.
I think Fleming's are the best, and there's often significant differences from the movies. For instance, I think the novel Moonraker is far superior to the film version (better female lead, more grounded plot involving nuclear terrorism rather than space travel and bioweapons).
Though Gardner was arguably a better writer, his stories tended too much towards being screen treatments. I remember one even having an obvious pre-title scene in the first chapter where Bond teams up with some air marshals to stop a plane hijacking. Ironically, the neverending animosity between the estate and the movie people ultimately kept his novels (or any of the ones post-Fleming) from being filmed.