- Uma
- Uma notata
- Umar al-Mukhtar Forces
- Umayyad
- umbel
- umbel-like
- Umbellales
- umbellar
- umbellate
- umbellifer
- Umbelliferae
- umbelliferous
- umbelliferous plant
- umbelliform
- Umbellularia
- Umbellularia californica
- umber
- umbilical
- umbilical cord
- umbilical hernia
- umbilical vein
- umbilical vesicle
- umbilicate
- umbilicus
- umbo
- umbra
- umbrage
- umbrageous
- umbrella
- umbrella arum
- umbrella bird
- umbrella fern
- umbrella magnolia
- umbrella pine
- umbrella plant
- umbrella sedge
- umbrella tent
- umbrella tree
- umbrella-shaped
- umbrellalike
- umbrellawort
- Umbria
- Umbrian
- Umbrina
- Umbrina roncador
- Umbundu
- umlaut
- Umma
- Umma Tameer-e-Nau
- Ummah
- ump
- umpirage
- umpire
- umpteen
- umpteenth
- umptieth
- umteen
- umteenth
