One-sample chi-square variance test - Tests if a sample comes from a Normal distribution with specified variance, against the alternative that it comes from a Normal distribution with a different variance

F-test for ratio of two variances - Tests if two independent samples come from Normal distributions with the same variance, against the alternative that they come from Normal distributions with different variances

Bartlett's M test for homogeneity of variances - Tests if multiple samples come from Normal distributions with the same variance, against the alternative that they come from Normal distributions with different variances

Fligner-Killeen median test - A test for homogeneity of variances which is robust against departures from Normality