Hafen Slawkenbergius is a fictional writer referenced in Laurence Sterne's novel Tristram Shandy.
The second book of De Nasis is said to be filled with a large number of short stories illustrative of Slawkenbergius' characterizations of noses.
Slawkenbergius' name may be derived from colloquial German Hafen ("chamber pot") and Schlackenberg ("manure heap"),[2] the latter Latinized as was common among early modern scholars.
He is mentioned in George Augustus Sala's book Twice Round the Clock; or, The Hours of the Day and Night in London (1859).
Sala talks of "briefless barristers" who "walk down Parliament Street arm-in-arm" and have "bold noses of the approved Slawkenbergius pattern".