WYSO (91.3 FM) is a radio station in Yellow Springs, Ohio, near Dayton, community owned and operated; formerly licensed and operated by Antioch College. It is the flagship NPR member station for the Miami Valley, including the cities of Dayton and Springfield. WYSO signed on in 1958 and has the distinction of being located in one of the smallest villages to host an NPR affiliate station. WYSO broadcasts in the HD Radio format. WYSO was originally on 91.5 MHz. It moved to 91.3 MHz in 1980.

WYSO started in February 1958 as a student and faculty station with a 10-watt transmitter located at the student union building of Antioch College, on the air for only 4 hours a day. The station increased power from 16-watts to 360 watts in 1960, and the introduction of permanent paid staff began a move towards reflecting and serving a larger community. At that time, WYSO was known as a university-based community radio station. Significantly, several Antioch College students and other volunteers took it upon themselves to be involved with an incipient community and public radio movement in the United States. Several of those individuals have occupied key positions since that time—out of proportion to the Dayton market’s modest size.

Before NPR affiliation, nearly all of the station's programming was locally originated. The station had carried live Metropolitan Opera radio broadcasts, ad hoc networks set up by anti-Vietnam War activists, and a few recorded syndicated programs. "WYSO People's News" a local news program, was aired in the 1970s and 1980s. The rest of WYSO's program schedule was eclectic and block programming. As at other community radio stations in the United States, NPR affiliation was viewed with suspicion by some insiders, but the attendant money from the Corporation for Public Broadcasting led to a permanent staff and a local fundraising mandate.

WYSO became an NPR member station and started broadcasting All Things Considered in 1973. The eventual popularity of NPR's news and information programming was not foreseen at the time and there were discussions about how the newly energized medium of noncommercial radio would best serve the community. The topic of local versus national origination was an important, but not the only, subject of debate. Of note, the decision to replace morning Bluegrass music, local and unique to the region, with network news in the morning was undertaken in the late 1980s. Tom and Jim Duffee and other local bluegrass musicians introduced the genre on WYSO around 1970, and it was embraced by management at the time as a link with the larger Southwest Ohio community.

In 1991, under the direction of General Manager Brian Gibbons and Program Director Ruth Dawson Yellowhawk, WYSO began the process to increase power from 10,000 watts to 37,000 watts, with permits to go up to 50,000, allowing the station to be heard throughout the Greater Dayton area and the Miami Valley. However, with an increased potential audience, the station was subsequently placed on a list in 1995 to lose CPB funding as part of a political focus on public broadcasting funding by the 104th United States Congress and House Speaker Newt Gingrich, who promised to zero out CPB funding. 80 public radio stations were initially listed for defunding due to either a lack of audience or a lack of fundraising. Controversial program changes during this period by Station Manager Norm Beeker, including adding programs such as Fresh Air, This American Life and Marketplace, cancelling Pacifica News and moving to a 24-hour broadcast with the BBC World Service overnight, increased the WYSO audience, the station established new highs in listener support, and the station was removed from the so-called "dis" list in 1998.

In the spring of 2002, a group of listeners formed "Keep WYSO Local" in response to cutbacks to local programming by GM Steve Spencer. The cutbacks included canceling volunteer-hosted shows like the evening jazz program, "Alternate Takes" and "Women in Music," which started in 1975 and was one of the country's longest running shows dedicated to women producers and musicians. Those changes made room on the WYSO schedule to carry the national music program World Cafe. The changes led to protests in the Yellow Springs community as the group debated the future of the station with the university.

In 2019, General Manager Neenah Ellis, working with leadership from the station, college and community, helped lead a process for WYSO to become independently owned, though still operated from the Antioch's Yellow Springs campus. In exchange, the college received $3.5 million as compensation. The station continued working in collaboration with the college by remaining in the campus's Kettering Building and offering an internship program for college students. Meanwhile, Antioch students have revived the low-watt, FCC-licensed radio station on campus — called Anti-Watt — which can be heard on 101.5 FM or streamed online.

In July 2021, after tripling its reporting staff in the prior 18 months, the station announced it was relocating out of the Kettering Building on the Antioch College campus and into the Union School House owned by Iron Table Holdings, which in turn was owned by Yellow Springs resident and comedian Dave Chappelle. The building, built in 1872, was being fully renovated, and a two-story addition was being constructed on the west side. As of early 2025, the Schoolhouse building was still undergoing renovations, but WYSO had raised the necessary $2.5M for its part of the project. By late 2025, move-in was expected to begin in October and be completed by early-to-mid January, 2026.