| Birth Date: | 18 February 1937 |
| Birth Place: | Tallinn, Estonia |
| Height: | 1.66m (05.45feet) |
| Weight: | 62kg (137lb) |
| Sport: | Swimming |
| Club: | Dünamo Tallinn |
Ulvi Indrikson (née Voog; born 18 February 1937) is an Estonian former freestyle swimmer who won a silver medal in the 4×100 m medley relay at the 1958 European Aquatics Championships. She also competed at the 1960 Summer Olympics in the 100 m and 4×100 m freestyle and finished eighth in the 4×100 m relay. During her career she won 11 national (USSR) titles: in the 100 m freestyle (1955–58, 60), 400 m freestyle (1956–60) and 4×100 m freestyle (1958), and set 10 national records.
Voog graduated from the University of Tartu. She started training in swimming in 1952 and after retirement in 1967 worked as a swimming coach for Dünamo Tallinn (1967–92) and the Soviet swimming team (1977). Around 1960 she changed her name to Indrikson. She is a grandmother of Estonian swimmers Triin, Martti and Berit Aljand. In 1957 she was chosen as the Estonian Sportspersonality of the year.