Tom Oddgeir Johnsen is a climate advisor at the Norwegian Shipowners' Association. Tom works on the NSA’s climate strategy and national and European climate measures. He also represents NSA on climate matters in ECSA, the European Shipowners' Association.

Tom joined the Norwegian Shipowners' Association in 2025. Prior to this, he spent ten years at the Norwegian Ministry of Climate and Environment where he worked on decarbonizing the transport sector and green shipping. Tom was a Climate Counsellor at the Mission of Norway to the EU from 2020 to 2024. Previously, he worked in the Ministry of Trade and Industry, the Ministry of Foreign Affairs, and NUPI.

Tom holds a master's degree in political economy from BI Norwegian Business School and a master’s degree in European Affairs from Lund University.