The Ross Sea and Amundsen Sea of Antarctica were sampled during the 2017-2018 CICLOPS (Cobalamin and Iron Co-Limitation of Phytoplankton Species) expedition for total dissolved concentrations of the trace metals Fe, Mn, Ni, Cu, Zn, and Cd. Water samples for dissolved trace metal analyses were collected at a total of 26 stations using a trace metal clean rosette suspended on a Kevlar line and equipped with twelve 8L X-Niskin bottles (Ocean Test Equipment) at depths ranging from 4.5 – 1209 m.