Thecla, Tecla, or its variants (Ancient Greek: Θέκλα, Thékla, lit. "God's fame") is a Greek feminine given name made famous by Saint Thecla (Thecla of Iconium), a 1st-century Christian martyr.

It may also refer to:

• Thecla of Alexandria, virgin, martyr, saint, and companion of Faustus, Abibus and Dionysius of Alexandria
• Thecla of Aquileia, one of a group of virgins from Aquileia, Italy, martyred in the 1st century according to the "Acts of St. Hermagoras"
• Thecla of Gaza, Christian martyr with Agapius (died 306)
• Thecla of Kitzingen, a saint
• Thecla of Persia (4th century), martyr
• Saint Tetha (c. 5th century), virgin and saint, a Welsh nun credited with the establishment of St. Teath in Cornwall
• Princess Thecla of Georgia (1776–1846), member of the Georgian royal family
• Thecla Åhlander (1855–1925), Swedish stage and film actress
• Thecla Boesen (1910–1996), Danish film actress
• Thecla Merlo (born Teresa Merlo), theologian who assisted in the founding and development of the Daughters of St. Paul in the 20th century
• Thecla Valloires, a 6th-century hermit

• Municipality of Sainte-Thècle, Quebec, Canada

• Cathedral of St. Thecla, the original Milan Cathedral
• St. Tecla's Chapel at Tarragona Cathedral in Spain
• Church of St. Thecla Welden, at Welden in Germany
• Church of St. Thecla, Quebec, Canada

• Thecla (butterfly), a butterfly genus

• All pages with titles beginning with thecla
• All pages with titles containing thecla
• Thekla (disambiguation)
• Tecla
• Theca, in botany and developmental biology, a case, covering, or sheath
• Tekla, software company
• Takla (disambiguation)