Polarity inversion may refer to: *

Polarity inversion (chemistry) In organic chemistry, umpolung () or polarity inversion is the chemical modification of a functional group with the aim of the reversal of Chemical polarity, polarity of that group. This modification allows secondary reactions of this functional g ...

(aka ), in organic chemistry * Polarity inversion (differential pairs), swapping of positive and negative wires in differential signal links

See also