Ohm may refer to:

• Georg Ohm (1789-1854), the German physicist
• Ohm (unit) (Ω), the SI unit of electrical resistance named after Georg Ohm
• Ohm's law, the physical law relating voltage drop (V), current (I) and electrical resistance (R) as $V\; =\; I\; \backslash cdot\; R$
• aum, the Hindu mantra syllable

See also

• Ohms

Omo (apartigilo) Ohm Ohm Ом