The Lionesses no.1 and World Cup runner-up beat Stuart Broad, Frankie Dettori, Alfie Hewett, Katarina Johnson-Thompson and Rory McIlroy to the gong at the ceremony in Salford.
Earps was England's stand-out performer at the World Cup in Australia and New Zealand in August, even saving a penalty in the final, which Spain won 1-0.
Outside of that tournament she won the Finalissima and Arnold Clark Cup, while she was also an FA Cup runner-up with United.
The Sports Personality Award is just one of a number of individual awards the 30-year-old has collected this year, including The Best FIFA Women's Goalkeeper award in February for her Euro 2022 winning heroics.
Off the pitch, Earps showed her character by pushing Nike to stock her England shirt after an oversight by the sporting giants left young fans unable to don her no.1 kit.
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That error was corrected in December, with Earps' green long-sleeved shirt selling out in five minutes.
The 70th edition of the award saw the Nottingham-born star beat a top three of England cricket star Broad and Team GB heptathlete Johnson-Thompson.
Heart Of Midlothian 
Celtic 
Reims 
Lyon 
PSV 
Groningen 
Celta Vigo 
Barcelona 
Benfica 
Estrela Da Amadora 
Sparta Rotterdam 
AZ Alkmaar 
Southampton 
Liverpool 
Como 
Fiorentina 
Sevilla 
Rayo Vallecano 
Ajax 
Pec Zwolle 
Palermo 
Sampdoria 
Ipswich 
Manchester Utd 
Napoli 
Roma 
Moreirense 
FC Porto 
Leganes 
Real Madrid 
Lazio 
Bologna 
Empoli 
Udinese 
CSKA Moscow 
Rubin 
Slovan Bratislava 
AC Milan 
Sparta Praha 
Atletico Madrid 
Valencia 
Stade Brestois 29 
Bayer Leverkusen 
Red Bull Salzburg 
Bayern Munich 
Paris Saint Germain 
Inter 
RB Leipzig 
Manchester City 
Feyenoord 
Sporting CP 
Arsenal 
FC Rostov 
Spartak Moscow 
Aston Villa 
Juventus 
Club Brugge