Mariana is an 1851 oil-on-panel painting by John Everett Millais. The image depicts the solitary Mariana from William Shakespeare's Measure for Measure, as retold in Tennyson's 1830 poem "Mariana". The painting is regarded as an example of Millais's "precision, attention to detail, and stellar ability as a colorist". It has been held by Tate Britain since 1999.