Assistant Masters' Association

{{Short description|British trade union}}

{{Infobox union

| name = Assistant Masters' Association

| image =

| founded = 1891

| dissolved = 1978

| merged = Assistant Masters' and Mistresses' Association

| members = 40,000 (1978)

| publication = The Journal of the Assistant Masters' Association

| location_country= United Kingdom

| affiliation = WCOTP

| key_people =

| headquarters = 29 Gordon Square, London

| footnotes =

}}

The Assistant Masters' Association (AMA) was a trade union representing male teachers in British secondary schools.

The union was founded in 1891 as the Incorporated Association of Assistant Masters in Secondary Schools, although it soon became the "Assistant Masters' Association", a counterpart to the Association of Assistant Mistresses (AAM). Philip Edgar Martineau was one of the founders of the association.{{cite book |title=The A.M.A.: The Journal of the Incorporated Association of Assistant Masters of Secondary School |date=1939 |publisher=University of Ilinios |page=142 |url=https://books.google.com/books?id=xmM0AQAAMAAJ&q=Philip+Edgar+Martineau |access-date=18 November 2023 |quote=Philip Edgar Martineau , one of the founders of the Association , who collapsed and died on March 10th while staying at Weston - super - Mare . Mr. Martineau was in his early days a master at Wellesbourne House School , Birmingham , and ...}} Membership of the union grew steadily, reaching 3,259 in 1910, and about 40,000 by 1978.{{cite book |last1=Marsh |first1=Arthur |last2=Ryan |first2=Victoria |title=Historical Directory of Trade Unions |volume=1 |date=1980 |publisher=Gower |location=Farnborough |isbn=0566021609 |pages=[https://archive.org/details/historicaldirect0004mars/page/8 8–9] |url=https://archive.org/details/historicaldirect0004mars/page/8 }}

From 1978, single-sex trade unions were prohibited, and the AMA accordingly merged with the AAM, forming the Assistant Masters' and Mistresses' Association.