Ilich, Ilyich, or Ilitch (Russian: Ильич) is a common Russian patronymic meaning "son of Ilya". In some Hispanic countries it is also used as a given name, honoring Vladimir Lenin (Vladimir Ilyich Ulyanov).
Ilich or Ilitch (Macedonian or Russian: Илич, Serbian: Илић) is also a separate non-Russian Slavic surname.
The name may refer to the following people:
- Given name
- Surname
- Christopher Ilitch (born 1965), American businessman, son of Marian and Mike
- Denise Ilitch (born 1955), American businesswoman and lawyer, daughter of Marian and Mike
- Fran Ilich, Mexican writer and media artist
- Ivan Illich, (1926–2002), Austrian writer
- Janine Ilitch (born 1972), Australian netball player
- Marian Ilitch (born 1933), American businesswoman, wife of Mike
- Mike Ilitch (1929–2017), American entrepreneur
- Nikola Ilich (born 1992), American association football midfielder
- Olga Ilich (born 1950 or 1951), Canadian politician
- Tode Ilich, Mayor of Kumanovo Municipality in Macedonia