Film Premier
Mar 4 1st vampire film Nosferatu premieres at the Berlin Zoological Garden, Germany, an adaptation of Bram Stoker's Dracula

Bram Stoker
- Mar 6 GB Shaw's "Back to Methusaleh III/IV" premieres in NYC
- Mar 7 US Ladies' Figure Skating championship won by Theresa Weld Blanchard
- Mar 7 US Men's Figure Skating championship won by Sherwin Badger
Event of Interest
Mar 9 Eugene O'Neill's "Hairy Ape" premieres in NYC

Eugene O'Neill
Event of Interest
Mar 13 George Bernard Shaw's "Back to Methusaleh V" premieres in NYC

George Bernard Shaw
- Mar 13 WRR-AM in Dallas TX begins radio transmissions
- Mar 13 NHL Championship: Ottawa Senators outscore Toronto St Pats, 5 to 4, in 2 games
- Mar 14 KGU-AM in Honolulu HI begins radio transmissions
- Mar 14 KSD-AM in Saint Louis MO begins radio transmissions
- Mar 14 WGR-AM in Buffalo NY begins radio transmissions
- Mar 15 1st southern radio station begins (WSB, Atlanta Georgia)
- Mar 15 Sultan Faud crowned King of Egypt, England recognizes Egypt
- Mar 15 France, which up until now has insisted on currency for all WWI reparation payments from Germany, now accepts raw materials as payment
- Mar 16 Egypt achieves independence from Britain, but British troops remain
- Mar 16 WKY-AM in Oklahoma City OK begins radio transmissions
- Mar 18 1st intercollegiate indoor polo championship (Princeton vs Yale)
Event of Interest
Mar 18 British magistrates in India sentence Mahatma Gandhi to 6 years imprisonment for disobedience

Mahatma Gandhi
- Mar 18 WBT-AM in Charlotte NC begins radio transmissions
- Mar 18 The first public celebration of Bat mitzvah, for the daughter of Rabbi Mordecai Kaplan, is held in New York City.
- Mar 20 USS Langley is commissioned, US Navy's 1st aircraft carrier
- Mar 20 WIP-AM in Philadelphia PA begins radio transmissions
- Mar 21 KGW-AM in Portland OR begins radio transmissions
- Mar 22 The Rand Rebellion in Southern Africa, which started as a strike by white mineworkers and became an armed rebellion against the state, is brought to a brutal end by the police
- Mar 23 1st airplane lands at the US Capitol in Washington, D.C.
- Mar 23 KMJ-AM in Fresno CA begins radio transmissions
- Mar 23 WEW-AM in Saint Louis MO begins radio transmissions
- Mar 24 81st Grand National: Lewis Rees aboard 100/9 chance Music Hall wins; only 5 out of 32 starters finish
- Mar 28 1st microfilm device introduced
- Mar 28 Stanley Cup Final, Mutual Street Arena, Toronto, ON: Toronto St Patricks (NHL) beat Vancouver Millionaires (PCHA), 5-1 for a 3-2 series win
- Mar 30 KGY-AM in Olympia WA begins radio transmissions
- Mar 30 WWL-AM in New Orleans LA begins radio transmissions
- Mar 31 KFI-AM in Los Angeles CA begins radio transmissions
- Mar 31 Prince Hendrik opens trade fair building in Amsterdam