Music Recording
Mar 1 Paul Whiteman and His Orchestra record "Ol' Man River" for Victor Records featuring Bing Crosby

Bing Crosby
- Mar 4 "Bunion Run" race from LA to NYC begins; It is won by Andy Payne
Event of Interest
Mar 15 Benito Mussolini modifies Italy electoral system (abolishes right to choose)

Benito Mussolini
- Mar 19 "Amos & Andy" debuts on radio (NBC Blue Network-WMAQ Chicago)
Music Premiere
Mar 22 Noël Coward's musical "This Year of Grace" premieres in London

Noël Coward
- Mar 27 KGB-AM in San Diego CA begins radio transmissions
- Mar 27 US Ladies' Figure Skating championship won by Maribel Vinson
- Mar 27 US Men's Figure Skating championship won by Roger Turner
- Mar 29 Yeshiva College (now University) chartered (NYC)
- Mar 30 87th Grand National: Mr. William Dutton aboard 100/1 long-shot Tipperary Tim wins as all of the 41 other starters fall during the race