The penumbra is the part of a shadow where the light source is only partially blocked.

Look up penumbra or penumbral in Wiktionary, the free dictionary.

Penumbra may also refer to:

• Penumbra (band), a French gothic metal band
• Penumbra Diffuse, the second studio album by American progressive metal band Canvas Solaris
• "Penumbra Phantasm", a song by Toby Fox heavily referenced in Homestuck tracks such as "Savior of the Waking World"
• "Penumbra", a song by John Ireland
• "Penumbra", a song by Tortoise
• "Penumbra" (Star Trek: Deep Space Nine), a 1999 episode of Star Trek: Deep Space Nine
• Penumbra (telenovela), Mexican telenovela
• Penumbra (World of Darkness), a region in the World of Darkness line of role-playing games
• Penumbra, a series of video games by Frictional Games consisting of:
  • Penumbra: Overture
  • Penumbra: Black Plague
  • Penumbra: Requiem

• Penumbra Theatre Company, an African American theatre in Saint Paul, Minnesota
• Penumbra (medical company), in Alameda, California

• Penumbra (law), a metaphor for rights implied in the United States Constitution
• Penumbra (medicine), surviving tissue at the margin of an ischemic event (such as a stroke) which is in danger of hypoxia and subsequent cell death
• Penumbra (Sun), the ring-shaped semi-bright region of a sunspot that surrounds the darker umbra
• Penumbral lunar eclipse, an eclipse that occurs when the Moon passes through the Earth's penumbra
• Billbergia 'Penumbra', a hybrid cultivar of the genus Billbergia in the Bromeliad family

• Umbra (disambiguation)

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