Johann Gottlieb Otto Tepper (19 April 1841 – 16 February 1923) was a Prussian-born botanist, teacher, plant collector and entomologist who spent most of his life living and working in Australia.

[2] He became master of a small country school, then joined the Education Department and taught at Monarto, Nuriootpa and Clarendon.

In 1883 he was appointed natural history collector to the South Australian Museum and from 1888 until his retirement, on 30 June 1911 as entomologist, for which he gave valued service.

(Johann Gottlieb) Otto Tepper (1841 – 16 February 1923) married Jane Brock ( – ) on 22 April 1867 They had a home at Somerset Place, Norwood J(ohann) Paul Tepper (c. 1844 – 13 August 1906), pioneer farmer of Monarto, then of Murtoa, Victoria[4] was a brother.

His son was John William Otto Tepper (1868–1957), who collected plants at Roebuck Bay, Western Australia, and sent them to his father for identification and description; this collection is now housed principally at Perth, Western Australia.