- 1A
1A or 1-A can refer to either:
* 1A (comics)
* "1-A", a story byThomas M. Disch
*1. A Slovenian Basketball League
*Adcox 1-A , a biplane built in Portland, USA in 1929
*Alpha-1A adrenergic receptor , a human gene
*Arginine vasopressin receptor 1A , a human gene
*Astra 1A , the first satellite launched and operated by Société Européenne des Satellites
*California Proposition 1A (2004) ,
*Class 1-A , a classification of the Selective Service System
*Croatian 1A Volleyball League
*Essex bus routes 1 and 1A
*Interferon beta-1a , a drug in the interferon family
*List of highways numbered 1A disambiguation page
*List of X-1A flights disambiguation page
*Little Joe 1A , a 1959 unmanned NASA launch
*Melatonin receptor 1A , a human gene
*Meltwater pulse 1A , a period of rapid deglacialization that took place 14.7-14.2 thousand years ago
*Mercury-Redstone 1A , a 1969 NASA mission
*Metallothionein 1A , a human gene
*MH-1A , a nuclear power reactor and the first floating nuclear power station
*NAFL Division 1A , an amateur football league
*Packard 1A-1500 , a 1929 12 cylinder liquid-cooled 60 degree Vee piston aircraft engine
*Pre-1A , a grade in the Jewish day school structure of education
*Secretoglobin, family 1A, member 1 (uteroglobin) , a human gene
*ShinMaywa US-1A , a Japanese anti-submarine warfare aircraft
*Sisu 1A , a homebuilt sailplane
*Turksat 1A , a satellite
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