Baby Archie Speaks During Cameo on Prince Harry and Meghan Markle's Podcast

Baby Archie may only be 17 months old, but that's not stopping him from wishing everyone a Happy New Year ... and naturally, it's to the delight of Mom and Dad.

Archie made a surprise appearance on Prince Harry and Meghan Markle's first episode of their "Archewell Audio" podcast Tuesday. Meghan first asks Archie if he's having fun, to which Archie replies, "Fun." Then, Dad coaxes him into wishing listeners a "Happy New Year."

It's clear to tell from the audio that both Harry and Meghan are more than excited to hear little Archie speak on the podcast ... Harry can barely contain his own laughter.

The rest of the episode featured some massive stars including Elton John and Tyler Perry ... Stacey Abrams also joined. But, c'mon, Archie upstaged 'em all.

It was just last week when Harry and Meghan were spotted strolling the streets of Beverly Hills. TMZ broke the story ... the couple plunked down $14 million on a Montecito estate back in August.