Seid may refer to:
- Systemic exertion intolerance disease, a medical condition also known as Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)
- Alamin Mohammed Seid, Eritrean politician
- Alan R. Seid (born 1957), Palauan businessman and politician
- Barre Seid, Chicago industrialist
- Joseph Brahim Seid (1927-1970), Chadian writer and Minister of Justice
- Ruth Seid (1913-1995), American novelist under the pen name Jo Sinclair
- Sattar Seid (born 1987), Iranian cross-country skier
- Seïd Khiter (born 1985), French footballer
- Seid Memić (born 1950), Bosnian siger
- Pasha Seid, in Verdi's opera Il corsaro
- Seid, in Mahomet (play)
- Seid or Seiðr, an Old Norse term for a type of sorcery or witchcraft
- USS Seid (DE-256), a United States Navy destroyer escort of World War II
The Collaborative International Dictionary
Seid \Seid\, n. [Ar seyid prince.] A descendant of Mohammed through his daughter Fatima and nephew Ali.
Usage examples of "seid".
Gute wird immer bei mir sein, wenn ihr drei bei mir seid, Nissyen, Bruder.
Doch traurig wird meine Welt sein, nachdem du und das Licht von dir aus ihr geschwunden seid.