Ulpia Marciana was the sister of Roman Emperor Trajan. She was born in 48ad and her birthplace is unknown.

She married Gaius Saloninus Matidius Patriunus. Her only child was her daughter Salonina Matidia. Saloninus died in 78ad and she never remarried.

After 105ad, her brother awarded her with the title of Augusta. She was the first sister of a Roman Emperor to receive this title. Marciana first didn't accept this, but her sister-in-law the Empress Pompeia Plotina insisted her to have this title.

Marciana died between 112-114ad. Trajan deified her and nominated 2 cities in her honour, Marciana and Marciana Ulpia Trajna in 2 Roman Provinces. All this honours show us, how much Trajan loved his sister.