The retired footballer, 51, shared a series of photos with Victoria from over the years, including from their wedding day and his 50th birthday celebrations last year.
"29 years together, 27 years married & you have given me everything I could ever wish for…our proudest achievement will always be our family," he captioned the post.
"I love you & Happy Anniversary @victoriabeckham."
Victoria responded by writing: "Happy anniversary. I love you so much".
She also shared a post of her own, showing a recent photo showing her husband smiling while she kissed his cheek.
"After 27 years of marriage, four amazing children and countless matching outfits, you're still my *everything*. Happy anniversary!! I love you so much @davidbeckham."
The couple were met with messages of support from some of their famous friends, including Gordon Ramsay, who commented: "Happy Anniversary sending lots of love."
"Happy anniversary to you guys!!," Eva Longoria - who is godmother to two of their children - wrote.
The Beckhams – who started dating in 1997 after meeting at a charity football match - were engaged the following year and then got married in 1999.
The couple share four children - sons Brooklyn, 27, Romeo, 23, and Cruz, 21, as well as daughter Harper, 14.
However, over the past year they have faced a public falling out with their eldest son, who in January shared a statement on social media accusing his parents of trying to "control" him and also "ruin his relationship" with wife Nicola Peltz.
He also alleged that his family had "disrespected" his wife.
Although the Beckhams have tried several times to extend a public olive branch to their son, mainly on social media, he has ignored them.
In a recent interview with The Wall Street Journal, Victoria addressed the feud for the first time, saying she and David "love our children so much" and have "always tried to be the best parents".
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