Magna

Magna is an inflected form of the Latin word magnus, 'great, large, vast, big, mighty', with cognates throughout the Indo-European languages, including English many and mega (the latter a doublet via Ancient Greek μέγας (mégas)). It appears in many names and titles, including:

Companies

Magna (bicycle company), bicycle brand of Dynacraft BSC
Magna Corporation, defunct American public company
Magna Entertainment Corp., North American gaming and horse racing company
Magna Home Entertainment, Australian entertainment distributor also known as Magna Pacific
Magna International, Canadian automotive supplier
Magna Publishing Group, American publisher of pornography
Magna Steyr, automobile manufacturer in Graz, Austria

Magna Graecia, ancient Roman name for the areas of Southern Italy where Greek was widely spoken
Magnis (Carvoran), a now ruined Roman fort, also known as Magna, at Carvoran, Northumberland, UK
Leptis Magna, ancient Roman city in Libya
Plancia Magna (fl. 1st century CE), prominent woman from Anatolia during the Roman Empire

Magna cum laude, indicating that an academic degree was earned 'with great praise'
Magna Defender, character from the Power Rangers Lost Galaxy TV series
Magna (moth), genus of moths in the family Erebidae
Magna (paint), brand name of an acrylic resin paint formerly sold by Bocour Artist Colors
Magna Science Adventure Centre, educational visitor attraction in Rotherham, England
Magna Special Craft, a brand of beer brewed by Compañía Cervecera de Puerto Rico
Magna (The Walking Dead), a fictional character from The Walking Dead
Magna, Utah, city in Salt Lake County, Utah
MAGNA awards, Australian museum awards