Deric Longden (born 1936 in Chesterfield, Derbyshire) is an English writer and autobiographer.

He married Diana Hill in 1957 and had two children, Sally and Nick. After various jobs he took over a small women's lingerie factory, but began writing and broadcasting in the 1970s for programmes like 'Does He Take Sugar?' and 'Woman's Hour' on BBC Radio 4. Most of his work was based on his own experience. His wife Diana's illness, subsequently believed to be a form of ME, forced him to sell the factory since when he has been a full-time writer, broadcaster and speaker.

The bestselling Diana’s Story, published in 1989, followed by Lost for Words, The Cat Who Came in from the Cold, I’m a Stranger Here Myself, Enough to Make a Cat Laugh and A Play On Words.

Deric Longden's first two books were adapted for television, the first retitled Wide-Eyed and Legless. Lost for Words, screened in January 1999 winning the Emmy for best foreign drama and a BAFTA for Thora Hird as best actress.

He married writer Aileen Armitage in 1990 and now lives in Huddersfield, West Yorkshire.