The lepton, plural lepta (Greek: λεπτόν, λεπτά), is the name of various fractional units of currency used in the Greek-speaking world from antiquity until today. The word means "small" or "thin", and during Classical and Hellenistic times a lepton was always a small value coin, usually the smallest available denomination of another currency.^[1]

The coin in the lesson of the widow's mite (Mark 12:41–44, Luke 21:1–4) is referred to as a lepton and Luke's Gospel also refers to the lepton or mite when stating that a person who does not make peace with his adversary in good time will be required to pay 'to the very last mite' before being released from prison.^[2] In the Hasmonean Kingdom the lepton was first minted under Alexander Jannaeus prior to 76 BCE.^[3]

In modern Greece, lepton (modern form: lepto, λεπτό) is the name of the 1⁄100 denomination of all the official currencies of the Greek state: the phoenix (1827–1832), the drachma (1832–2001) and the euro (2002–current) – the name is the Greek form of "cent". Its unofficial currency sign is Λ (lambda).^[1] Since the late 1870s, and until the introduction of the euro in 2001, no Greek coin had been minted with a denomination lower than 5 lepta.

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  20-lepton coin, Phoenician subdivision, 1831.
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  5-lepton coin, drachma subdivision, 1833.
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  10-lepton coin, drachma subdivision, 1849.
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  One-lepton coin of 1879, the last one-lepton coin of the drachma issued.
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  2-lepton coin 1869. The last two-lepton coins were minted in 1878.
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  An ancient mite of a type still circulating in Jesus' time, typical of what might have appeared in the Bible's lesson of the widow's mite.