| Show Name: | Oneira |
| Format: | Radio drama |
| Runtime: | 30 minutes |
| Country: | United Kingdom |
| Language: | English |
| Home Station: | BBC Radio 4 Extra |
| Starring: | Lyndsey Marshal Peter Marinker |
| Producer: | Liz Webb |
| First Aired: | 3 September 2007 |
| Last Aired: | 7 September 2007 |
| Num Series: | 1 |
| Num Episodes: | 5 |
| Audio Format: | Stereophonic sound |
| Website: | Oneira at BBC Radio 4 Extra |
Oneira[1] is a science fiction comedy written for BBC Radio 4 Extra by Robert Easby. It tells a surreal story of the encounter between a young museum guard, called Oneira, and a 400-year-old alchemist calling himself Nikolai. Nikolai claims to be the artist who painted one of the pictures hanging in the museum. The painting includes a figure who resembles Nikolai himself. He also tells Oneira that he and she are destined to search for a book of alchemy called the Lux Ata or "Book of Black Light". The resulting quest involves aliens, string theory, a sinister official from the electricity board called "Mister Resistor", a TV cooking show, a cappuccino bar, a comedian travelling by flying saucer, and a dead science fiction author. Oneira's boyfriend Pete is transformed from an up-and-coming young financier in the City into a bucket of water and a pair of Argyll socks while their expensive penthouse flat is destroyed by a ravenous refrigerator.