Lilac (disambiguation)
- Buddleja davidii
- Ceanothus
- Freedom Planet
- Hardenbergia violacea
- Hesperis matronalis
- Librarians' Information Literacy Conference
- Lilac
- Lilac (IU album)
- Lilac (The Early November album)
- Lilac (color)
- Lilac (film)
- Lilac (restaurant)
- Lilac (song)
- Lilac (train)
- Lilacs (Walker)
- Lilacs (painting)
- Line 5 (São Paulo Metro)
- Literatura Latino-Americana e do Caribe em Ciências da Saúde
- Marusho
- Melia azedarach
- Nanaka Suwa
- Syringa vulgaris
- The Lilacs (Philadelphia)
- The Lilacs (band)
- USCGC Lilac (WAGL-227)
- USS Lilac (1863)
- Veronica hulkeana