H+
H+ or h+ may refer to:

Science and technology
Electron hole, h+ the conceptual opposite of an electron
Evolved High Speed Packet Access, H+ mobile phone icon
Hydron (chemistry), H+ a cationic form of atomic hydrogen

Other
H (S-train), a rail service in Copenhagen, Denmark
H+: The Digital Series, a science-fiction web series
H+ (album), a 2018 solo album by Jean-Benoît Dunckel
Humanity+, an international organisation and magazine that advocates transhumanism
Transhumanist Party, whose symbol is H+