Dorcas (Greek: Δορκάς, romanized: Dorkás), or Tabitha (Imperial Aramaic: טביתא/ܛܒܝܬܐ, romanized: Ṭaḇīṯā, lit. '(female) gazelle'), was an early disciple of Jesus mentioned in the Acts of the Apostles (Acts 9:36–43, see discussion here). She lived in the port city of Joppa, today absorbed by Tel Aviv. Acts describes her as being known for her "good works and acts of mercy", sewing clothes for the poor. When she died, the widows of her community mourned her and sent urgently for Peter (Acts 9:38), who was in nearby Lydda. As evidence of her charity, they showed him some of the clothes she had sewn, and according to the biblical account he raised her from the dead.

She is celebrated as a saint by the Catholic Church, Eastern Orthodox Church, the Anglican Communion, and some Protestant denominations.

Both her Jewish name, which is in Aramaic, rendered as Tabitha, and her Greek one, Dorcas, translate to '[female] gazelle.' The equivalent Hebrew name is Zibiah, also spelled Tsibiah, a name carried by the mother of King Joash of Judah. Some explain the use of a Greek variant of Tabitha's Syriac Aramaic name by the fact that she was living in a port city, where many inhabitants and visitors would primarily communicate in Greek. Dorcas was a common name of the time both among Jews and Greeks. Today, the scientific name of one species of gazelle is Gazella dorcas, the dorcas gazelle.

The Greek verb used in Acts 9:36 is διερμηνεύω, transliterated diermēneuō, which means "to interpret fully, to explain", and in this passage it is rendered "is by interpretation", which in context leads to the literal meaning: "Tabitha, meaning Dorcas" (i.e. 'gazelle').

It is unclear whether Dorcas was herself poor or a widow. Acts describes her as beloved in the specifically Christian community at Joppa, and by implication prominent in it. This might also be indicated by the fact that Peter took the trouble to come to her from a neighbouring city, when requested by the community members.

Although widowhood has been associated with poverty and dependence in the early modern Western mind, that was not necessarily the case for Dorcas. The Bible describes a variety of widows, both poor and rich, powerful and dependent. Under Roman law in this era, when a woman's father died, she would become legally independent and would conventionally inherit an equal share of his property along with her siblings. She controlled this property herself even if married. If her husband died, she would also recover her dowry, which would have been controlled, and possibly managed or invested, by her husband during their marriage. Thus a woman could actually become wealthier when her husband died. If Dorcas was a wealthy benefactress on the model of Mary Magdalene, then she nevertheless humbly sewed the clothes herself rather than simply buying them.

According to the New Testament, Tabitha died in Joppa, at the house of Simon the tanner. The house where she reportedly died and was resurrected by Saint Peter can still be visited in Tel Aviv-Jaffa. When she allegedly died a second time, she was buried in what are now the gardens of an Orthodox Church in Jaffa, where her tomb can still be visited.

Basil of Caesarea refers to Dorcas as an example in his Morals (rule 74): "That a widow who enjoys sufficiently robust health should spend her life in works of zeal and solicitude, keeping in mind the words of the Apostle and the example of Dorcas." She is also commemorated in poems by Robert Herrick ("The Widows' Tears: Or, Dirge of Dorcas") and George MacDonald ("Dorcas").