Seis may refer to: Seis, a type of Puerto Rican dance music Seis am Schlern, a village in Tyrol, Italy Seis, a locality in Lutzhorn, Germany
SEIS may refer to: On-Line Encyclopedia of Integer Sequences Seed Enterprise Investment Scheme Seismic Experiment for Interior Structure, a scientific instrument on board the InSight Mars lander , by Mon Laferte (2021); see Mon Laferte discography
See also Sei (disambiguation) Seix