Eli Heimans (28 February 1861 – 22 July 1914) was a Dutch nature educator and conservationist.
Along with Jacobus Thijsse he popularized outdoors nature education through his writings.
In 1882 he began to teach in Amsterdam and here he met Jan Ligthart.
Along with Jacobus Thijsse he began to write more on nature and they founded the magazine De Levende Natuur in 1896.
In 1889 he wrote a popular book for schoolboys called Willem Roda which although fictional included explorations in geology.