| 8671 | January 20 | Birth | 1934 – Horst Mahseli, Polish footballer (d. 1999) |
| 8672 | January 20 | Birth | 1936 – Frances Shand Kydd, English-Scottish mother of Diana, Princess of Wales (d. 2004) |
| 8673 | January 20 | Birth | 1937 – Dorothy Provine, American singer, dancer, and actress (d. 2010) |
| 8674 | January 20 | Birth | 1938 – William Berger, Austrian-American actor (d. 1993) |
| 8675 | January 20 | Birth | 1938 – Derek Dougan, Irish-English footballer and journalist (d. 2007) |
| 8676 | January 20 | Birth | 1939 – Paul Coverdell, American politician (d. 2000) |
| 8677 | January 20 | Birth | 1939 – Chandra Wickramasinghe, Sri Lankan-English mathematician, astronomer, and biologist |
| 8678 | January 20 | Birth | 1940 – Carol Heiss, American figure skater and actress |
| 8679 | January 20 | Birth | 1940 – Krishnam Raju, Indian actor and politician |
| 8680 | January 20 | Birth | 1940 – Mandé Sidibé, Malian economist and politician, Prime Minister of Mali (d. 2009) |
| 8681 | January 20 | Birth | 1941 – Pierre Lalonde, Canadian singer and television host |
| 8682 | January 20 | Birth | 1941 – Clift Tsuji, American politician |
| 8683 | January 20 | Birth | 1943 – Rick Evans, American singer and guitarist (Zager and Evans) |
| 8684 | January 20 | Birth | 1944 – José Luis Garci, Spanish director and producer |
| 8685 | January 20 | Birth | 1944 – Farhad Mehrad, Iranian singer-songwriter and guitarist (d. 2002) |
| 8686 | January 20 | Birth | 1945 – Christopher Martin-Jenkins, English journalist and sportscaster (d. 2013) |
| 8687 | January 20 | Birth | 1945 – Eric Stewart, English singer-songwriter, guitarist, and producer |
| 8688 | January 20 | Birth | 1946 – David Lynch, American director, producer, and screenwriter |
| 8689 | January 20 | Birth | 1946 – Vladimír Merta, Czech singer-songwriter, guitarist, and journalist |
| 8690 | January 20 | Birth | 1947 – Cyrille Guimard, French cyclist and sportscaster |
| 8691 | January 20 | Birth | 1948 – Nancy Kress, American author and academic |
| 8692 | January 20 | Birth | 1948 – Natan Sharansky, Ukrainian-Israeli physicist and politician Deputy Prime Minister of Israel |
| 8693 | January 20 | Birth | 1949 – Göran Persson, Swedish politician 31st Prime Minister of Sweden |
| 8694 | January 20 | Birth | 1950 – Daniel Benzali, Brazilian-American actor |
| 8695 | January 20 | Birth | 1950 – William Mgimwa, Tanzanian banker and politician, 13th Tanzanian Minister of Finance (d. 2014) |
| 8696 | January 20 | Birth | 1950 – Mahamane Ousmane, Nigerian politician, President of Niger |
| 8697 | January 20 | Birth | 1951 – Iván Fischer, Hungarian conductor and composer |
| 8698 | January 20 | Birth | 1952 – Nikos Sideris, Greek psychiatrist and poet |
| 8699 | January 20 | Birth | 1952 – Paul Stanley, American singer-songwriter, guitarist, producer, and actor (Kiss and Wicked Lester) |
| 8700 | January 20 | Birth | 1954 – Rudy La Scala, Venezuelan singer-songwriter and producer |