The warning comes as the GMC publishes revised guidance to clarify the rules on reporting convictions.
The old guidance said reporting traffic offences was not needed, leading many to assume there was no need to report any offence not leading to a criminal record.
But Jane O'Brien, the GMC's head of standards, warned doctors they should report any non-traffic offence without delay.
'We don't imagine all that many doctors get ASBOs,' she added. 'But you never know.'
Separately, the GMC published updated guidance warning doctors against using patient group directions to prescribe anti-wrinkle treatments such as Botox.
Ms O'Brien said some nurses had been using the orders to inject the treatments at so-called 'Botox parties'.
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