Jane Agnes Chessar (1835, in Edinburgh – 3 September 1880, in Brussels) was a British teacher and educationalist.
Educated at private schools in Edinburgh, Chessar travelled to London in 1851 to train as a teacher.
After ill-health forced her to resign from this position in 1866, she occupied her time giving lectures and private tuition.
She was elected a member of the London School Board in 1873, but did not seek re-election after forced to leave England for a warmer climate in 1875.
Her death was caused by cerebral apoplexy, while she was in Brussels for an educational congress.