Tessier and Teissier are surnames of French origin, and may refer to:
- Albert Tessier (1895–1976), French-Canadian priest, historian, and film maker
- Christian Tessier (b. 1978), Canadian actor
- Claude Tessier (b. 1943), French politician from Quebec
- Dan Tessier (b. 1979), Canadian professional ice hockey player
- Emilie de Tessier (b. 1850, d. unknown), French cartoonist who worked under the pseudonym Marie Duval
- François-Xavier Tessier (1799–1835), Canadian doctor, publisher and political figure
- Guy Teissier (b. 1945), Member of the National Assembly of France.
- Henri Antoine Marie Teissier (b. 1929), French Catholic Bishop, Archbishop Emeritus of Algiers.
- Joseph-Adolphe Tessier (1861–1928), Canadian politician from Quebec
- Jules Tessier (1852–1934), Canadian lawyer and politician from Quebec
- Orval Tessier (b. 1933), Canadian professional ice hockey player
- Paul Tessier (1917–2008), French surgeon in the field of craniofacial surgery
- Pierre Le Tessier (1255–1325), French cardinal
- Robert Tessier (1934–1990), American actor and stuntman
- Thomas Tessier (b. 1947), American author of horror novels and short stories
- Ulric-Joseph Tessier (1817–1892), Canadian lawyer, judge, and politician from Quebec
Place
- Tessier, Saskatchewan
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