"Got to Be Certain" is a song by Australian recording artist and songwriter Kylie Minogue from her debut studio album Kylie (1988). It was written and produced by Stock, Aitken and Waterman, who also produced Minogue's first four albums. The song was released as the second single from Kylie in most territories outside Australia and was released on 2 May 1988 in the UK. "Got to Be Certain" was Minogue's third single release in Australia, on 20 June 1988.

Unlike her previous single, "Got to Be Certain" was not written especially for Kylie. It was originally recorded by singer and PWL-stablemate Mandy Smith for her debut album Mandy which was also produced by Stock Aitken Waterman. However, for unknown reasons, her version was shelved and the song was given to Kylie to record instead.

On 2 May 1988, "Got to Be Certain" was released in the United Kingdom. The song became Minogue's second top five hit when it debuted at number fifteen on the singles chart before climbing the chart in the weeks that followed, peaking at number two and remaining there for three weeks. It eventually sold 315,000 copies. Outside of the UK, the song was also widely successful. It reached number one in seven countries, including Finland and Israel. The single sold 17,227 copies in Sweden at the time. In New Zealand, it peaked at number two and stayed in the charts for 14 weeks, making it her most successful single in the country at that time.

In Australia, "Got to Be Certain" was released on 7" and 12" vinyl on 20 June 1988, cassette single on 11 July 1988, and the remix 12" was released on 25 July 1988. It became the second single ever to debut on the Australian singles chart at number one, remaining in the top spot for three weeks.