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The pinewood nematode (PWN), <i>Bursaphelenchus xylophilus</i>, the causal agent of pine-wilt disease (PWD), is a threat to <i>Pinus</i> forests in Asia and Europe. <i>Bursaphelenchus mucronatus</i> and <i>B. fraudulentus</i> are closely related non-pathogenic pine-wood nematodes. In the present work, four medium-chain aliphatic alcohols (C10 to C13) were evaluated in direct-contact bioassays against <i>B. xylophilus</i>, <i>B. mucronatus</i> and <i>B. fraudulentus</i>. The compounds showed high nematicidal activity against the species tested. The lowest values for half-maximal effective concentrations (EC₅₀) were determined in <i>B. xylophilus</i> and <i>B. fraudulentus</i>, suggesting a higher sensibility to these compounds. Further bioassays will include compounds with different chain lengths and functional groups to explore the diversity in the activity of oxygen-containing aliphatic compounds for a more targeted sustainable-control strategy for the PWN.