Isabelline may refer to:
Isabelline style, or Isabelline, a late medieval architectural style developed under the reign of Isabella I of Castile Isabelline (colour), a pale grey-yellowish or parchment colour—an off-white colour often used to describe animals Isabelline bush-hen (Amaurornis isabellina), also isabelline waterhen, a large rail Isabelline shrike (Lanius isabellinus), member of the shrike family (Laniidae) Isabelline wheatear (Oenanthe isabellina), small passerine bird Parties and factions in Isabelline Spain