Hi,

Absolutely. NASA works fairly regularly with the European Space Agency (ESA). There have been US-built instruments on ESA missions and vice versa. Also it is somewhat common for NASA to provide the launch vehicle for an ESA mission.

And, of course, there has been the ongoing collaboration between NASA and the Russian Space Agency (Roscosmos) regarding sending astronauts to and from the space station. Not to mention that there have been astronauts from many different countries and different portions of the station were built by different partners, including Canada (CSA), JAXA and ESA.

I expect as more countries develop their space agencies and space activities/presence, there will be more international agreements and cooperation between them (including NASA).

-Christina

I echo what Christina said, and would add that during the Apollo era, Australia played a role, providing a two radio telescopes that helped monitor communications and signals for TV. The most famous of the two is the Parkes Radio Telescope. Interestingly, because of speed-of-light delay of the TV signals being re-transmitted once they had been received, Australian audiences saw Neil Armstrong take the first step on the Moon 0.3 seconds before others on Earth.

NASA is also currently working with space agencies in South America.