Family
- father Jean-Nicholas Kristel: was a Dutch clay pigeon shooting champion; refused to wear ear plugs during competitions and went deaf; divorced from Kristel's mother c. 1969; died in 1994
- mother Piet Kristel: divorced from Kristel's father c. 1969; died in 2000
- sister :
- son Arthur Claus: born c. 1975
Companions
- Hugo Claus: Dutch; born c. 1925; together in the 1970s
- Ian McShane: had relationship after they met filming "The Fifth Musketeer" (1977)
- : Kristel has said that after she and McShane separated in the early 1980s, she had a lesbian relationship with a woman she will not identify
- husband Alan Turner: married in 1982; divorced after five months
- husband Philippe Blot: married in 1986; divorced
- Freddy: Belgian; "I'm not allowed to say his name - or else" according to Kristel
