quality:correction
Personality and personal life

Glad and Blanton stated that de Klerk's "political choices were undergirded by self-confidence and commitment to the common good." His brother Willem stated that de Klerk's demeanour was marked by "soberness, humility and calm", that he was an honest, intelligent, and open-minded individual, and that he had a "natural cordiality" and a "solid sense of courtesy and good manners". He felt that de Klerk's "charisma" came not from an "exceptionally strong individualism" but from "his rationality, logic and balance". He was, according to de Klerk, "a man of compromise rather than a political innovator or entrepreneur".

Willem stated that "he keeps an ear to the ground and is sensitive to the slightest tremors", and that it was this which made him "a superb politician". Willem also stated that his brother was "a team-man who consults others, takes them into his confidence, honestly shares information with his colleagues, and has a knack of making people feel importance and at peace".

His former wife Marike described de Klerk as being "extremely sensitive to beautiful things", exhibiting something akin to an artistic temperament.

Willem also noted that "in the most profound sense", de Klerk was driven by his concern for Afrikanerdom and "the survival of his own people in their fatherland". De Klerk was deeply upset that many Afrikaners did not realise that his reforms to dismantle apartheid were carried out with the intention of preserving a future for the Afrikaner people in South Africa.

With Marike, de Klerk had three children: Susan, who became a teacher, Jan, who became a farmer in Western Transvaal, and Willem, who went into public relations. Willem stated that de Klerk had a close relationship with his children, and that he was "a loving man who hugs and cuddles".

De Klerk was a heavy smoker but gave up smoking towards the end of 2005. He also enjoyed a glass of whisky or wine while relaxing. He enjoyed playing golf and hunting, as well as going for brisk walks.

De Klerk's Nobel Prize medal was stolen from his home in November 2022.