PGS (Petroleum Geo-Services) is a technologically focused oilfield service company involved in providing geophysical services worldwide.

[3] Its seismic service offerings help oil companies find oil and gas reserves offshore.

Product offerings span from survey planning and data acquisition, through advanced imaging, to reservoir analysis and interpretation.

PGS has a presence in over 10 countries with headquarters in Oslo, Norway.

The company was headquartered at Lysaker until 2013 when it moved to nearby Lilleaker.