Alfons Joseph "Alf" Klimek (born 3 February 1956) is an Australian musician. During the 1980s he was based in Berlin as a singer-songwriter for Spliff (as Alf Klimax, 1980–83) and The Other Ones (1984–90). That group included his younger twin siblings, Johnny and Jayney. In 1987 The Other Ones had two hit singles, "Holiday" and "We Are What We Are", which charted in Germany and the United States.