Spencer John Skipper (c. 1848 – September 1903) was a journalist in South Australia who wrote and drew using the pseudonym "Hugh Kalyptus".

He was an occasional contributor to the E. R. Mitford's satirical magazine Pasquin (1867–1870), using the nom de plume "Unowho".

An avid member of the Volunteer Force, he was also the unofficial reporter on the peacetime activities of South Australia's militia.

Skipper was associated with John Howard Clark, whose clever satirical column "Echoes from the Bush by Geoffry Crabthorn", which ran from 1867 to 1878, he emulated in "Echoes and Re-Echoes" in The Evening Journal and The Adelaide Observer under the nom de plume "Hugh Kalyptus" from 1882 to 1903.

Their children were: For many years they had a home in Semaphore, then moved to Hewitt Avenue, Rose Park.