Sedis may refer to :
- Acta Apostolicae Sedis, the official gazette of the Holy See, appearing about twelve times a year
- Acta Sanctae Sedis was a Roman monthly publication containing the principal public documents issued by the Pope, directly or through the Roman Congregations
- Apostolicæ Sedis was a papal constitution promulgated by Pope Pius IX on 12 October 1869
- Incertae sedis is a term used to define a taxonomic group where its broader relationships are unknown or undefined
- Suburbicarii Sedis are Roman Catholic dioceses in the vicinity of Rome, whose bishops form the highest-ranking order of Cardinals, the Cardinal Bishops
- Sedis Bàsquet, a women's basketball team of La Seu d'Urgell, Spain
- Sedis, french chain manufacturer owned by Tube Investments of India Limited since 2010