* Phonetically: The "y" in "hymn" acts as a vowel sound. It's pronounced like the "i" in "him".
* Traditionally: In English spelling, "y" can act as a vowel or a consonant. In "hymn," it's considered a consonant because it starts the syllable.
So, the answer depends on what you're focusing on:
* Phonetic sound: Yes, the "y" is a vowel.
* Traditional spelling: No, the "y" is a consonant.