It is both a day to celebrate the achievements of women and girls around the globe and to focus on the challenges we still face as we work towards gender equality.
Mae'n ddiwrnod i ddathlu cyflawniadau menywod a merched ym mhedwar ban byd ac i ganolbwyntio ar yr heriau sy'n ein hwynebu o hyd wrth inni weithio tuag at sicrhau cydraddoldeb rhywiol.