The Hollywood actor, 53, marked the special occasion via Instagram and Twitter on Saturday by sharing two throwback photos of the pair hugging.
'Happy birthday mum!' Hugh wrote next to the sweet photos.
'Happy birthday mum!' Hugh Jackman, 53, (right) shared a heartwarming birthday tribute to his mother Grace McNeil (left) on Saturday
In the images, a grinning Hugh is seen wrapping his arm around Grace's shoulders while posing on a leafy sidewalk.
Grace is meanwhile seen smiling back at her talented son and placing her head on his shoulder.
Hugh's relationship with his mother hasn't always been picture-perfect, however.
Family first! Hollywood actor marked the special occasion via Instagram and Twitter on Saturday by sharing two throwback photos of the pair hugging
The star was just eight years old when Grace abandoned her family in Australia and returned to the UK.
Hugh told Australia's Who magazine in January 2018 that his mother abandoning him as a child was 'traumatic'.
The Broadway star was an eight-year-old schoolboy when Grace left him without even saying goodbye.
Scars: Hugh 's relationship with his mother hasn't always been picture-perfect, however. The star was just eight years old when Grace abandoned her family in Australia and returned to the UK. Pictured: an undated photo of Hugh as a toddler
She left Australia and returned to her native England in the late '70s, leaving her husband, Christopher Jackman, to raise their children alone.
After the couple divorced, Hugh's sisters, Zoe and Sonya, went to live with Grace in the UK; Hugh and his brothers, Ian and Ralph, stayed in Sydney with their