Two - Apollo 11 and 12. Apollo 13 would have been the third manned lunar landing.
Apollo 11 was preceded by Apollo 9 which tested the combined Apollo Command/Service Module and the Lunar Module in Earth Orbit, and Apollo 10 which was the Dress Rehearsal for Apollo 11 taking the Lunar Module most of the way to the Moons surface but not landing.
The Apollo missions had different crew sizes, with the majority of missions having a crew of three astronauts. However, the first two Apollo missions (Apollo 7 and Apollo 9) were crewed by three astronauts, while Apollo 8 and Apollo 10 had crews of four. Apollo 11, which famously landed on the moon, had a crew of three.
In fact the rockets were called Saturn, Apollo was the name of the missions. NASA used "classical" names to name their programmes from 1958 until the Space Shuttle missions started. The first manned missions were Mercury (the messenger of the Gods), the intermediate missions between Mercury and Apollo were called Gemini - named after the astrological sign of the twins as the Gemini missions had two astronauts per flight. Apollo was named by Abe Silverstein after the God of light and archery.
There were six moon landings and two trips to the moon. Apollo 8 and 10.
Three from the Apollo missions and two from the Soviet Unions Moon Walker program, so five total.
Mercury (early one-man missions). Gemini (early two-man missions). Apollo (early three man missions). The Space Shuttle, and all Russian crafts, land on land.
The Space Shuttle program was named after the Apollo program to honor the Apollo missions that landed astronauts on the Moon. The name Apollo also had historical significance and symbolized the United States' commitment to space exploration.
A total of 12. Six manned missions to the lunar surface, with two men on the surface for each one.
There really isn't a definition of the Apollo missions so much as a purpose for the Apollo Program as well as a purpose for each mission that supported the goal of the Apollo Program. The Apollo Program was a program that ran from 1963-1972 with the purpose of safely placing a man on the moon as well as safely bringing him back to Earth. Of all the missions, two orbited the Earth, two orbited the moon, one (Apollo 13) was supposed to land on the moon but malfunctioned, slungshot around the moon and safely returned to earth leaving six missions that actually landed on the moon and returned safely to Earth.
There were a total of 14 missions There were 3 unmanned missions (Apollo4, Apollo5, Apollo6), 3 manned missions into Earth orbit.(Apollo7, Apollo8, Apollo9) 6 missions landed on the moon. The first two flights (11 and 12) included successful Moon landings. The Apollo 13 mission was aborted before the landing attempt, but the crew returned safely to Earth. The four subsequent Apollo missions (14 through 17) included successful Moon landings. The last three of these were J-class missions that included the use of Lunar Rovers. Apollo 17 launched December 7, 1972 and was the last Apollo mission to the moon. The Apollo spacecraft and Saturn launch vehicles were later used for the Skylab program and the joint American-Soviet Apollo-Soyuz Test Project. These later programs are thus often considered to be part of the overall Apollo program. The were no missions named Apollo 1, 2 or 3. They were called SA-1 SA-2 and SA-3. They were test launches of the Saturn V rocket and the Apollo capsule.
The Mercury missions were focused on orbiting Earth with one astronaut, the Gemini missions practiced maneuvers and docking in space with two astronauts, and the Apollo missions aimed to land astronauts on the Moon. Each program built upon the achievements and technology of the previous one, with Apollo being the culmination of these efforts with successful Moon landings.