Odd E. Isøy (1923/1924 – 1983) was a Norwegian resistance member. Among others, he single-handedly placed explosives on the crane of the 3,215-ton Norwegian cargo ship MS Belpamela.
During the occupation of Norway by Nazi Germany Isøy was a member of Milorg and their group for sabotage missions, Aks 13000. Of the 102 sabotage missions performed by Aks 13000, Isøy participated in 15, the highest number for a single person according to Per Røed. Per Røed himself is an exception here.
One of the notable missions in which Isøy participated was the sabotage against the garage belonging to the company Freia. The goal was to blow up the workshop for repairing aircraft parts with 40 kilograms (88 lb) of dynamite and some plastic explosives. The dynamite was split in two packs, and Odd Isøy brought one pack to Freia via bicycle. The team—Kjell Bull-Hansen, Odd Isøy, Arnold Guttormsen, Per Nitteberg, Bjørn Pedersen and Tor Pedersen—then gathered at Isøy's family's home, not far from Freia, in the evening. Bull-Hansen and Isøy was to enter the garage with a ladder and through the roof. The other team members were guarding the perimeter. After the fuse had been lit, four guards from the Luftwaffe showed up, one of whom was shot to death by Guttormsen or Nitteberg. When retreating, Isøy managed to stop a tram which was heading towards the soon-to-explode garage. Although the saboteurs did not have time to perform a broader evacuation of civil inhabitants in the area, there was no collateral human damage. The garage was utterly destroyed.
On 10 December 1944, Isøy participated in a sabotage mission near Oslo Vestbanestasjon. Isøy, Røed and Joar Olsen was to blow up fifteen railroad tank cars at Filipstad; two other persons were to be used as guards. However, the two guards became busy when a handful of railway workers were discovered on the location. After placing the explosives, Røed was intercepted as he almost stumbled upon a German guard. Because of this, the sabotage team retreated in silence, and not long after German specialists arrived and removed the explosives. Intelligence later showed that next to the fifteen tanks was a train filled with ammunition, possibly even V-2 parts. Had all of this exploded, it would be disastrous.