Astronaut Biographies from the National Aeronatics and Space Administration's Johnson Space Center. There are links to bios under Cosmonauts, Payload Specialist Astronauts directly. Under Career Astronauts you must click on one of three boxes near the top. They are: Active Management Astronauts, Former Astronauts, and International Astronauts.
Canadian Astronauts from the Canadian Space Agency website. Look under astronauts and click on biographies.
The Space Race: People - There is limited information here on people who were important in the "space race" of the 1960's. Not everyone on this page was an astronaut.
Women in Aviation and Space History: This site is from the National Air and Space Museum. Use the alphabetical drop boxes to find the names of the women pilots and astronauts highlighted on this site.
Astronauts from Europe: this is part of the website for the European Space Agency. Click on a picture to get information about each astronaut.
LucidCafe Library: look under Scientists at the bottom right hand corner. Be careful though, not all of these scientists are astronomers.