By H.G. Wells. Likely the most famous example as it was aided by an amazingly well done radio version that had people running for the hills.

By Larry Niven and Jerry Pournelle. Jerry Pournelle. A hard science take on the alien invasion trope

By Robert A. Heinlein. Aliens invaded Earth and our minds.

By Chris Berman. An Alien Invasion story unique because the aliens invade other planets out of insect-like instinct rather than malice.

By K.A. Applegate. A children's book series noteworthy because the aliens invade not with ray guns and flying saucers, but by infiltrating the minds and bodies of humans.

By Warren Rochelle. The aliens invaded Earth after unleashing a deadly virus against humans and now treat humans like pets.

By Harry Turtledove A book series that has a different approach to alien invasion—they invade during WWII, which forces humans to form alliances against the aliens. Aliens also have somewhat comparable technology to humans.

By Adam-Rex. A humours young adult novel where the invading aliens force all Americans onto reserves in Florida and Earth is renamed Smekland.

By Jack Finney. As the name indicates, this is a story where aliens invade by snatching the humans bodies and effectively replacing them. It is a classic Si Fi novel and has been made into movies.

By David Weber. A story that focuses on the resistance effort managed by humans against their alien invaders—who incidentally wiped out over half the race in mere minutes.