| Kaj Uldaler | |
| Birth Name: | Kaj Uldahl Christoffersen |
| Birth Date: | 28 November 1906 |
| Birth Place: | Copenhagen, Denmark |
| Position: | Left inside forward |
| Youthclubs1: | Boldklubben Frem |
| Years1: | 1924–1927 |
| Years2: | 1928–1942 |
| Clubs1: | Boldklubben Frem |
| Clubs2: | B 93 |
| Caps1: | 39 |
| Caps2: | 202 |
| Goals1: | 36 |
| Goals2: | 131 |
| Manageryears1: | 1948 |
| Managerclubs1: | Helsingør |
| Nationalyears1: | 1927–1939 |
| Nationalteam1: | Denmark |
| Nationalcaps1: | 38 |
| Nationalgoals1: | 15 |
Kaj Uldaler (born Kaj Uldahl Christoffersen on 28 November 1906; died 6 April 1987)[1] was a Danish amateur football player. He spent his club career with BK Frem and B.93, scoring 131 goals in 202 games for B.93.[2] He scored 15 goals in 38 internationals for the Denmark national football team from 1927 to 1939. He made his international debut in the 25-anniversary game of the Football Association of Norway, and played his last game in the 50-anniversary tournament of the Danish Football Association.
1922-23 with Frem, 1928–29, 1929–30, 1933–34, 1934–35 and 1938–39 with B 93