| Lockheed Space Operations Company (LSOC) |
 United States |
Commercial |
|
0 |
0 |
0 |
| Lockheed/Sanders Associates (Lockheed-Sanders) |
United States |
Commercial |
1986 |
0 |
0 |
0 |
| Logos Space Services, Inc. (Logos) |
United States |
Commercial |
2024 |
0 |
0 |
0 |
| Lomonosov Northern (Arctic) Federal University (NArFU) |
 Russia |
Academic / research |
2010 |
0 |
0 |
0 |
| Long Range Weapons Establishment (LRWE) |
 Australia |
Government / agency |
1947 |
0 |
0 |
0 |
| Long Wall (ABL) |
United States |
Commercial |
2017 |
0 |
0 |
1 |
| Los Angeles County Museum of Art (LACMA) |
United States |
Academic / research |
1910 |
0 |
0 |
0 |
| LTV Electronic Systems Division (LTV ESD) |
United States |
Commercial |
1964 |
0 |
0 |
0 |
| LTV Missiles and Space (Vought Corporation) (Vought Corp) |
United States |
Commercial |
1976 |
0 |
0 |
0 |
| LTV, Michigan Army Missile Plant (LTV MAMP) |
United States |
Commercial |
1962 |
0 |
0 |
0 |
| Luhan Studio (Luhan) |
 South Korea |
Commercial |
2018 |
0 |
0 |
0 |
| Lulea Technical University (Lulea UT) |
 Sweden |
Academic / research |
1971 |
0 |
0 |
0 |
| Luliang Municipal People's Government (Luliang SRZ) |
 China |
Government / agency |
|
0 |
0 |
0 |
| Lunar and Planetary Institute (LPI (LSI)) |
United States |
Academic / research |
1968 |
0 |
0 |
0 |
| Lunar Rocket and Rover Co. (LRRC) |
United States |
Commercial |
2002 |
0 |
0 |
0 |
| Lund University (Lunasonde) |
United States |
Commercial |
2016 |
0 |
0 |
0 |
| Lund University (Lund) |
Sweden |
Academic / research |
1666 |
0 |
0 |
0 |
| M42 Technologies (M42 Tech) |
United States |
Commercial |
2014 |
0 |
0 |
0 |
| Mabuhay Philippines Satellite Corp (MPSC) |
 Philippines |
Commercial |
1996 |
0 |
0 |
0 |
| Macau University of Science and Technology (MUST) |
Macao SAR China |
Academic / research |
2000 |
0 |
0 |
0 |
| MacDonald, Dettwiler and Associates (MDA) |
 Canada |
Commercial |
1990 |
0 |
0 |
0 |
| Magellan Aerospace Corporation (MAC) |
Canada |
Commercial |
1996 |
0 |
0 |
1 |
| MaiaSpace (MaiaSpace) |
 France |
Commercial |
2022 |
0 |
0 |
1 |
| Makeev Design Bureau (Makeev) |
Russia |
Government / agency |
1993 |
0 |
0 |
0 |
| Makeyev Rocket Design Bureau |
Russia |
Commercial |
1947 |
0 |
0 |
1 |
| Malaysian National Space Agency (ANGKASA) |
 Malaysia |
Government / agency |
2002 |
0 |
0 |
0 |
| Malaysian Space Agency (MYSA) |
Malaysia |
Government / agency |
2019 |
0 |
0 |
0 |
| Malek-Ashtar Univ. of Technology (Malek Ashtar U) |
 Iran |
Academic / research |
1984 |
0 |
0 |
0 |
| MARA University of Technology (UiTM) |
Malaysia |
Academic / research |
1956 |
0 |
0 |
0 |
| Marconi (Marconi) |
 United Kingdom |
Commercial |
|
0 |
0 |
0 |
| Maritime Launch Services (MLS) |
Canada |
Commercial |
2016 |
0 |
0 |
0 |
| Maritime Self Defense Force (JMSDF) |
 Japan |
Government / agency |
1954 |
0 |
0 |
0 |
| Marlan Space (Marlan Space) |
 United Arab Emirates |
Commercial |
2024 |
0 |
0 |
0 |
| Marquardt/Ogden (Marquardt/Ogden) |
United States |
Commercial |
1957 |
0 |
0 |
0 |
| Marquardt/Van Nuys (Marquardt) |
United States |
Commercial |
1948 |
0 |
0 |
0 |
| Marshall Intech (UAE Bin Ghalib Group) (Marshall Intech) |
United Arab Emirates |
Commercial |
|
0 |
0 |
0 |
| Martin-Baker Aircraft Ltd (Martin-Baker) |
United Kingdom |
Commercial |
|
0 |
0 |
0 |
| Martin-Baltimore (Martin-Bal) |
United States |
Commercial |
|
0 |
0 |
0 |
| Martin-Denver (Martin-Denver) |
United States |
Commercial |
1955 |
0 |
0 |
0 |
| Martin/Orlando (Martin/Orlando) |
United States |
Commercial |
1957 |
0 |
0 |
0 |
| Maryland Aerospace (MD Aero) |
United States |
Commercial |
2004 |
0 |
0 |
0 |
| Masdar Institute of Science and Technology (Masdar IST) |
United Arab Emirates |
Academic / research |
2007 |
0 |
0 |
0 |
| Masdar Institute, Khalifa University (Khalifa Masdar) |
United Arab Emirates |
Academic / research |
2017 |
0 |
0 |
0 |
| Mass. Inst of Technology (MIT) |
United States |
Academic / research |
1916 |
0 |
0 |
0 |
| Masten Space Systems (Masten) |
United States |
Commercial |
|
0 |
0 |
0 |
| Masten Space Systems, R&D Shop (Masten) |
United States |
Commercial |
2004 |
0 |
0 |
0 |
| Matra Marconi Space (MMS/Velizy) |
France |
Commercial |
1989 |
0 |
0 |
0 |
| Matra Marconi Space (Stevenage) (MMS/Stevenage) |
United Kingdom |
Commercial |
1994 |
0 |
0 |
0 |
