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)