Hugo Zukal (1845–1900) was an Austrian lichenologist and mycologist. Born in Troppau, he graduated from high school there in 1859, and was afterwards employed as a botanist until 1864. From 1864 until 1872, he served in the Kaiserlich-Königlich army. After this, he attended the teacher training college in Trautenau, and became a teacher in Freudental and Vienna. He has been credited for having introduced the term pallisade hyphae in an 1895 publication to refer to a microscopic arrangement of fungal tissue characteristic of the cortex in the lichen genus Roccella. In 1898 he became a professor of phytopathology at the University of Natural Resources and Life Sciences, Vienna. He died in Vienna in 1900.