Gongan or Gong'an may refer to:
- Gong'an County (公安县), Jingzhou, Hubei, China
- Gong'an, Zhongshan County (公安镇), town in Guangxi, China
- Kōan, also known as Gongan, story, dialogue, question, or statement in Chán Buddhism
- Gonganbu, or the Ministry of Public Security Bureau, the PRC's regular inspectorate and police force
- Gongan, the time span between gong ageng strikes