S. spectabilis may refer to:
Sabellastarte spectabilis, a marine worm species Saproscincus spectabilis, a lizard species Selenidera spectabilis, the yellow-eared toucanet, a bird species Senna spectabilis, a flowering plant species Solaster spectabilis, a starfish species Solidago spectabilis, a flowering plant species Somateria spectabilis, the king eider, a duck species Streptomyces spectabilis, a bacterium species