Sinnickson may refer to:
People:
- Clement Hall Sinnickson (1834–1919), American Republican Party politician
- Thomas Sinnickson (jurist) (1786–1873), American jurist and statesman from Salem, New Jersey
- Thomas Sinnickson (merchant) (1744–1817), American merchant and statesman from Salem, New Jersey
Geography:
- Sinnickson, Virginia, unincorporated community in Accomack County, Virginia
This disambiguation page lists articles associated with the title Sinnickson.
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