
List of extraterrestrial memorials is a list of different types of memorials that are not on Earth.

The Apollo 11 goodwill messages are statements from leaders of 73 countries around the world on a disc about the size of a 50-cent piece made of silicon that was left on the Moon in 1969 by the Apollo 11 astronauts.

DHL MoonBox is a mementos box that will be going to the Moon in 2022 on Astrobotic Technology's Peregrine Lunar lander. The DHL MoonBox is made by DHL. It contains 28 capsules all of which have been filled. It contains items from the USA, UK, Canada, Nepal, Germany and Belgium. The 28 payloads on it are:

Elon Musk's Tesla Roadster is an electric sports car that served as the dummy payload for the February 2018 Falcon Heavy test flight and became an artificial satellite of the Sun. "Starman", a mannequin dressed in a spacesuit, occupies the driver's seat. The car and rocket are products of Tesla and SpaceX, respectively, both companies headed by Elon Musk. The 2010 Roadster is personally owned by and previously used by Musk for commuting to work. It is the first production car launched into space and first to orbit the sun.

Fallen Astronaut is a 3.5-inch (8.9 cm) aluminum sculpture created by Paul Van Hoeydonck. It is a small stylized figure, meant to depict an astronaut in a spacesuit, intended to commemorate the astronauts and cosmonauts who have died in the advancement of space exploration. It was commissioned and placed on the Moon by the crew of Apollo 15 at Hadley Rille on August 1, 1971, next to a plaque listing the 14 men known who died. The statue lies horizontal on the ground among several footprints.

The Lunar plaques are stainless steel commemorative plaques measuring 9 by 7+5⁄8 inches attached to the ladders on the descent stages of the United States Apollo Lunar Modules flown on lunar landing missions Apollo 11 through Apollo 17, to be left permanently on the lunar surface. The plaques were originally suggested and designed by NASA's head of technical services Jack Kinzler, who oversaw their production.

The MarsDial is a sundial that was devised for missions to Mars. It is used to calibrate the Pancam cameras of the Mars landers. MarsDials were placed on the Spirit and Opportunity Mars rovers, inscribed with the words "Two worlds, One sun" and the word "Mars" in 22 languages. The MarsDial can function as a type of sun-dial known as a gnomon, in modern times this is the stick part of a sundial. A gnomon type sundial is basically a "stick in the ground" design, but by looking at the length and direction of the shadow the time of day can be calculated. The sundial can also be used to tell which way is North, and to overcome the limitations of a magnetic north different from a true north.

Phoenix was an uncrewed space probe that landed on the surface of Mars on May 25, 2008 and operated until November 2, 2008. Phoenix was operational on Mars for 157 sols. Its instruments were used to assess the local habitability and to research the history of water on Mars. The mission was part of the Mars Scout Program; its total cost was $420 million, including the cost of launch.

The Pioneer plaques are a pair of gold-anodized aluminum plaques that were placed on board the 1972 Pioneer 10 and 1973 Pioneer 11 spacecraft, featuring a pictorial message, in case either Pioneer 10 or 11 is intercepted by intelligent extraterrestrial life. The plaques show the nude figures of a human male and female along with several symbols that are designed to provide information about the origin of the spacecraft.

The Voyager Golden Records are two phonograph records that were included aboard both Voyager spacecraft launched in 1977. The records contain sounds and images selected to portray the diversity of life and culture on Earth, and are intended for any intelligent extraterrestrial life form who may find them. The records are a sort of time capsule.