Katei (嘉禎) was a Japanese era name (年号,, nengō,; lit. "year name") after Bunryaku and before Ryakunin. This period started in September 1235 and ended in November 1238. The reigning emperor was Shijō-tennō (四条天皇).
| Katei | 1st | 2nd | 3rd | 4th |
|---|---|---|---|---|
| 1235 | 1236 | 1237 | 1238 |
| Preceded by: Bunryaku |
Era or nengō: Katei |
Succeeded by: Ryakunin |