<jats:title>Abstract</jats:title><jats:p>In our continuing search on halogenated metabolites from species of the red algal genus <jats:italic>Laurencia</jats:italic>, a novel squalene‐derived triterpene polyether, named omaezakianol (<jats:bold>2</jats:bold>), was isolated from <jats:italic>Laurencia omaezakiana</jats:italic> <jats:sc>Masuda</jats:sc> along with 15,16‐anhydrothyrsiferol (<jats:bold>3</jats:bold>). Their structures were determined by spectral and chemical methods.