Star Alliance

Star Alliance logoThe Star Alliance is the world’s largest global airline alliance, ahead of SkyTeam and Oneworld, and is headquartered in Frankfurt am Main, Germany. It was founded in 1997, with its name and emblem representing the five founding airlines. Star Alliance has since grown considerably and its current membership includes 27 airlines. Star Alliance operates with the slogan: The Way The Earth Connects.
Source: Wikipedia

Full members and some of their affiliates:
Adria Airways
Aegean Airlines
Air Canada (founding member)
Air China
Air India
Air New Zealand
All Nippon Airways
Asiana Airlines
Austrian Airlines
Avianca, including Avianca Brazil
Brussels Airlines
Copa Airlines
Croatia Airlines
Ethiopian Airlines
EVA Air, including Uni Air
LOT Polish Airlines, including Eurolot
Lufthansa (founding member), including Eurowings and Air Dolomiti
Scandinavian Airlines (founding member)
Shenzhen Airlines
Singapore Airlines, including SilkAir
South African Airways
Swiss International Airlines
TAP Portugal, including Portugalia
Thai Airways International (founding member)
Turkish Airlines, including Anadolu Jet and Sun Express
United Airlines (founding member)

Former members and some of their affiliates:
– Ansett Australia
– Blue 1
British Midland International
Continental Airlines
Shanghai Airlines
TACA Airlines, including Aviateca
TAM Airlines
US Airways
VARIG, including Nordeste, Rio Sul and PLUNA