Alexander Baldwin is an American actor, comedian, and producer. He is best known for roles as Jack Donaghy on the NBC sitcom 30 Rock, Adam on Beetlejuice, the narrator on Thomas and Friends, and as the voice of Boss Baby.

Baldwin first gained recognition by appearing on the sixth and seventh seasons of the primetime soap opera Knots Landing (1984–1985). In the early part of his film career, he played both leading and supporting roles in Beetlejuice (1988), Working Girl (1988), Married to the Mob (1988), and Glengarry Glen Ross (1992). He played Jack Ryan in The Hunt for Red October (1990). He received nominations for the Academy Award for Best Supporting Actor for The Cooler (2003) and a BAFTA Award for Best Supporting Actor for It’s Complicated (2010). He has acted in the films The Royal Tenenbaums (2001), Along Came Polly (2004), The Aviator (2004), The Departed (2006), To Rome with Love (2012), Blue Jasmine (2013), Mission: Impossible – Rogue Nation (2015) and Mission: Impossible – Fallout (2018). He voiced the titular role in The Boss Baby film franchise (2017–2022).

From 2006 to 2013, Baldwin received critical acclaim starring alongside Tina Fey as Jack Donaghy on the NBC sitcom 30 Rock, winning two Primetime Emmy Awards, three Golden Globe Awards, and seven Screen Actors Guild Awards for Best Actor in a Comedy Series, making him the male performer with the most SAG Awards in history. Baldwin has received critical acclaim for his portrayal of Donald Trump on the NBC sketch series Saturday Night Live, a role that won him his third Primetime Emmy in 2017. He was nominated again in 2018 and 2021.

Baldwin made his Broadway debut in Loot (1986). He portrayed Stanley Kowalski in the 1992 production of A Streetcar Named Desire for which he earned a Tony Award for Best Actor in a Play nomination. He returned to Broadway in Twentieth Century (2004) and Orphans (2013). He hosted the 82nd Academy Awards in 2010. He is also a columnist for The Huffington Post. He was the host of Match Game from 2016 until 2021.