Seltzer is carbonated water.
Seltzer may also refer to:
Hard seltzer, alcoholic drink Seltzer (surname) Seltzer, Pennsylvania, a census-designated place in Schuylkill County, Pennsylvania, United States
See also Alka-Seltzer Bromo-Seltzer Selters (Lahn), a village in Germany known for its natural mineral springs Seltzer bottle Selzer Setzer