基西米（Kissimmee）位于美国佛罗里达州中部，是奥西奥拉县的县治。

根据2000年美国人口普查，基西米共有50,814人，其中白人占67.22%、非裔美国人占9.99%、亚裔美国人占3.38%。

Kissimmee (/kᵻˈsɪmiː/ kə-SIM-ee) is a city in Osceola County, Florida. As of the 2010 United States Census, the population was 59,682. It is the county seat of Osceola County. Kissimmee is a Principal City of the Orlando-Kissimmee-Sanford, Florida, Metropolitan Statistical Area, which had a 2010 population of 2,134,411.