Paul Michael Joseph Denino (born September 29, 1994), better known as Ice Poseidon, is an American Internet personality, live streamer, and YouTuber. He was primarily known for streaming the video game Old School RuneScape and his IRL streams. Denino gained peak prominence in 2017 when his IRL streams became popular. He is best known for his IRL streams, which he describes as "life streaming". Rolling Stone recognized Denino as a "pioneer 'life streamer'".

Initially a streamer on Twitch, Denino was publicly banned from the platform for being swatted off an airplane at Phoenix airport after a viewer called in a bomb threat under Denino's name. Following several years of streaming on YouTube, Denino moved to Mixer, until the streaming platform shut down in July 2020. On May 6, 2023, Denino started streaming on Kick.

Denino admitted to taking over $500,000 in funds from the liquidity pool of CXCOIN, a cryptocurrency pump and dump scheme, profiting him over $300,000. Denino stated his intention to reimburse $150,000 to the investors he had defrauded; however, reports indicate that only $50,000 have been verified as returned to the token holders.

On June 28, 2023, Denino was arrested in Bangkok after he live-streamed himself giving his girlfriend a lap dance, and charged for violating Thailand's anti-pornography laws. Denino published an apology video on his Twitter promptly after being arrested. On August 18, 2023, Denino revealed that criminal charges against him had been dropped and that he had left Thailand.

Denino was a partnered streamer on Twitch. He rose to prominence for his Old School RuneScape streams in 2015 playing under the pseudonym "Ice Poseidon", which he created using a random name generator when he was twelve years old. He moved into streaming IRL, beginning by streaming himself playing Pokémon Go. He was banned multiple times on Twitch. In late December 2016, Twitch announced the launch of the IRL section. Denino during this time would also decide to move to California to pursue his Twitch career full-time. He frequently traveled around the USA IRL streaming, averaging thousands of concurrent viewers.

He was permanently banned from Twitch on April 28, 2017, after being swatted on American Airlines Flight 458 from Los Angeles to Phoenix while live streaming on the platform. Police officers removed Denino and another person from the plane after landing in Phoenix. The incident made national news across the US, as a hoax bomb threat had been called in by one of Denino's viewers under his name. While this was not the first time he had been swatted during a livestream, it was the first on Twitch to lead to a permanent suspension.

The decision to ban Ice Poseidon from Twitch sparked controversy, with some believing his ban was unjustified, including Denino himself. Some members of the community demanded that Twitch undo the ban, citing complaints that the Twitch terms of service were too vague and with Denino stating, "When you look at the terms of service, there was no rules saying that you shouldn't leak your location".

Following his ban from Twitch in spring 2017, Denino took to YouTube, taking most of his fans (the "Purple Army") with him, a rarity for streamers.