Margaret Omotayo Sanni Alphonsi MBE (born 20 December 1983) is an English former rugby union player who played as a flanker for Saracens W.R.F.C.

[2] Alphonsi was appointed a Member of the Order of the British Empire (MBE) in the 2012 Birthday Honours for services to rugby.

She was a Rugby World Cup 2015 Ambassador and is an ambassador of several not-for-profits and charities including Peace One Day, Wooden Spoon, Sporting Equals and SKRUM which aims to give the youth of Africa hope for the future through rugby.

She has played in two Rugby World Cups and in 2012 shared in a record seventh successive Six Nations title and a sixth Grand Slam in seven years.

She won the Pat Marshall award from the Rugby Union Writers’ Club, where she pipped New Zealand captain, Richie McCaw, to become the first woman to claim the prize in its 50-year history.