Ben Fogle and his wife Marina are said to be "devastated" over their loss, which happened when she was 7 months pregnant.
READ: HOW TO DEAL WITH GRIEF AND SEPARATION
Their spokesman confirmed the news to the Mirror.
They said: "Tragically Marina and Ben Fogle have lost their precious baby at 32 weeks gestation. Marina is still in hospital.
"They are obviously devastated and would appreciate their privacy at this terrible time. They thank you for your understanding."
READ: INSPIRATIONAL QUOTES ON DEALING WITH GRIEF
The married couple previously had a miscarriage before their son was born in 2009.
Ben and Marina are parents to son Ludo, seven, and daughter Lona, three together.
Our thoughts are with Ben Fogle, Marina and their family at this sad time.
["Not all pregnancies have a happy ending": One couple reveals how to support a family if their baby dies](https://closeronline.co.uk/news-real-life/opinions/pregnancies-happy-ending-one-couple-reveals-support-family-baby-dies/ ""Not all pregnancies have a happy ending": One couple reveals how to support a family if their baby dies")