一二三

一二三, meaning "one, two, three", may refer to:

Hifumi, Japanese given name and surname Ichi-ni-san, a local yaku in traditional Japanese card game Oicho-Kabu "One Two Three", a track in Chinese television series Only Side by Side with You Original Television Soundtrack

Other uses 123 Democratic Alliance (一二三民主聯盟), political party in Hong Kong OTT Airlines (一二三航空公司), Chinese airline YES stroke alphabetical order (一二三漢字筆順排檢法), Chinese character sorting method