Kaplan is a proper noun used mainly as a surname or brand name, notably for Kaplan, Inc., a well-known test-preparation company. In linguistics, it’s pronounced as a two-syllable name with emphasis on the first: /ˈkæplən/ in most English contexts, though some non-native settings may reduce vowels slightly. It’s common in academic and professional discussions and often encountered as a company or person reference rather than a common noun.
Full pronunciation guide
