Theophano Martinakia (Greek: Θεοφανώ; 866/67 – 10 November 897) was a Byzantine empress by marriage to Leo VI the Wise.

In reaction, the Amorian emperor Theophilos forced his kinsman Martinakes to become a monk and convert his personal house into a monastery.

[3][4] The marriage was arranged by Basil I and forced on Leo VI, and its eventual failure may have been influenced by the poor relation of father and son.

[3] In the seventh year of Leo's reign (c. 893), Theophano retired to a monastery in the Blachernae suburb of Constantinople.

When he was forbidden to do so, he decided to dedicate it to "All Saints," so that if his wife were in fact one of the righteous, she would also be honored whenever its feast day was celebrated.