The Sarnia Police Service (SPS) is asking for the public's help to find 28-year-old Shaina Boissoneau.
Police said she was last spoken to on Wednesday, October 4.
Boissoneau is described as 5' 1'' with an average-sized build.
She has black hair and brown eyes, and it's unknown what clothing she was wearing.
Anyone with information on her whereabouts is asked to call SPS at 519-344-8861 extension 0.