Astronaut
The first civilian in space was Valentina Tereshkova aboard Vostok 6 (she also became the first woman in space on that mission).
Tereshkova was only honorarily inducted into the USSR's Air Force, which did not accept female pilots at that time. A month later, Joseph Albert Walker became the first American civilian in space when his X-15 Flight 90 crossed the line, qualifying him by the international definition of spaceflight. Walker had joined the US Army Air Force but was not a member during his flight. 
The first people in space who had never been a member of any country's armed forces were both Konstantin Feoktistov and Boris Yegorov aboard Voskhod 1.
Ellen Ochoa
Ochoa became the first Hispanic woman in the world to go to space when she served on a nine-day mission aboard the shuttle Discovery in 1993. The purpose of the shuttle mission was to study the Earth's ozone layer. A veteran of four space flights, Ochoa has logged nearly 40d 19h 36m in space. She was a mission specialist on STS-56 (1993), was payload commander on STS-66, and was mission specialist and flight engineer on STS-96 and STS-110 in 2002. Ochoa was in Mission Control during the Space Shuttle Columbia disaster and was one of the first personnel informed of television coverage showing Columbia's disintegration.