In 2018, Olivia was the second-most common name in the United States. Olivia has been the most popular baby girl name in the United Kingdom for four years in a row, beginning in 2014. It is also one of the most popular names among children in Australia. Olivia first entered the list of the most popular names in the United States when it ranked as the 12th most popular name of all time. It became more popular after being used by actress Olivia De Havilland in the 1950s. In Canada, Olivia is the ninth most popular name of all time. It is especially popular among women in Quebec where it ranks as the top name of all time. Olivia has been listed as the most popular name of the 20th century by some sources. It has always been among the top 10 names since the 1880s, but it reached this position during the 1990s and 2000s. After considering changes made over time to the list, such as adding or removing names, Olivia remains within the top 10. The most common spelling of the name is Olivia. However, it can be written as Oliva, Olief, Oliwa, Ohlie, and others.