Over the Air was an annual mobile technology-focused overnight hack day event held in London from 2008 to 2016.

[1] The two-day event would include practical and educational talks and a hacking competition.

[2] Sponsors of the event have included the BBC,[3] Bluevia,[4] Nokia,[5] PayPal,[6] and Vodafone.

In 2015, the event was held at St John the Baptist, Hoxton; on 25 and 26 September.

It featured one of the first workshop sessions [14] for the Micro Bit; along with the usual hackathon and lightning talks.