|Class and type:||Megayacht|
|Displacement:||4,100 metric tons|
|Length:||110.00 m (360.89 ft)|
|Beam:||16.00 m (52.49 ft)|
|Draft:||3.20 m (10.5 ft)|
|Crew:||48 crew members|
Ona, (formerly Dilbar), is a motor yacht built in 2008 by Lürssen. She is owned by Russian oligarch Alisher Usmanov and is named after his mother. With an overall length of 110.00 m (360.89 ft) and a beam of 16.00 m (52.49 ft) she is the 32nd largest yacht in the world, tied with her sister ship Radiant.
Ona's exterior was designed by Tim Heywood and her interior by Alberto Pinto. The yacht has a helipad on her bow.