Peter Germon Tessier (1819 – 1886) was an English-born merchant in Newfoundland.
[1] He was born in Newton Abbott, Devon and came to Newfoundland with his brother Lewis in 1842.
The brothers were partners with Samuel Langley until 1847, when they opened a fishery supply business.
The company expanded into the trade in salt cod; it continued to operate after his death, closing in 1893.
His son James C. Tessier served in the Newfoundland assembly.