Aymar-DeMuth Propellers

{{short description|Defunct American propeller manufacturer}}

{{Use mdy dates|date=January 2022}}

{{Use American English|date=January 2022}}

{{Infobox company

| name = Aymar-DeMuth Propellers

| logo =

| caption =

| type =

| traded_as =

| fate =

| predecessor =

| successor =

| foundation =

| founder =

| defunct =

| location_city = Ellicott City, Maryland

| location_country = United States

| location =

| locations =

| area_served =

| key_people =

| industry = Aerospace

| products = Aircraft propellers

| services =

| revenue =

| operating_income =

| net_income =

| assets =

| equity =

| owner =

| num_employees =

| parent =

| divisions =

| subsid =

| homepage =

| footnotes =

| intl =

}}

Aymar-DeMuth Propellers was an American manufacturer of wood laminate and composite propellers for homebuilt aircraft. The company headquarters was located in Ellicott City, Maryland.Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 83. BAI Communications. {{ISBN|0-9636409-4-1}}

The company produced a line of two-bladed maple laminate propellers as well as wood-glass composite designs for aircraft with two-stroke or four stroke engines up to {{convert|300|hp|kW|0|abbr=on}}, such as the Van's Aircraft RV-7, Thorpe T-18 and Glasair.

The company discontinued operations in 2012 after the death of its founder, Mike DeMuth.{{Cite web|url=https://obittree.com/obituary/us/maryland/ellicott-city/slack-funeral-home-pa/michael-demuth/1130026/|title=Michael John DeMuth Obituary - Ellicott City, MD {{!}} ObitTree|website=obittree.com|language=en|access-date=2017-06-12}}