Ulpia Marciana (August 48 – 112/114) was the beloved elder sister of Roman Emperor Trajan and grandmother of empress Vibia Sabina the wife of Hadrian.

She bore Patruinus a daughter Salonia Matidia, who was born on 4 July 68.

Marciana did not accept this at first, but her sister-in-law, the Empress Pompeia Plotina, insisted that she take the title.

The first town was called Colonia Marciana Ulpia Traiana Thamugadi (modern Timgad, Algeria) and was founded around 100.

The other town was founded in 106 and was called Marcianopolis (which is now a part of modern Devnya, Bulgaria).