Ustonson is a British surname. Notable people with the surname include:
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Onesimus Ustonson (1736–after 1783), British manufacturer of fishing tackle
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Maria Ustonson (
fl.
''Floruit'' ( ; usually abbreviated fl. or occasionally flor.; from Latin for 'flourished') denotes a date or period during which a person was known to have been alive or active. In English, the unabbreviated word may also be used as a noun indic ...
1822–1833), British manufacturer of fishing tackle, daughter-in-law of Onesimus
{{Surname
Surnames of British Isles origin