T1A may refer to:

Places Line T1a (Oslo Metro), Oslo, Norway T1A (postal code); see List of postal codes of Canada: T

Products BAe Hawk T1A, jet trainer Eurofighter Typhoon T1A, jet fighter; see Eurofighter Typhoon variants

Other uses iodothyronamine (T1a), a thyroid hormone

See also

TLA (disambiguation) TIA (disambiguation)