<jats:title>Abstract</jats:title><jats:p>Three new monoterpene alkaloids, mairine A (<jats:bold>1</jats:bold>), mairine B (<jats:bold>2</jats:bold>), and mairine C (<jats:bold>3</jats:bold>), and a new caffeic acid ester, 2‐(1‐hydroxy‐4,4‐dimethoxycyclohexyl)ethyl caffeate (<jats:bold>4</jats:bold>), were isolated from the EtOH extract of the whole plants of <jats:italic>Incarvillea mairei</jats:italic> var. <jats:italic>multifoliolata.</jats:italic> The structures of these compounds were established on the basis of 1D‐ and 2D‐NMR and HR‐ESI‐MS analysis.