Last seen: "Captain America: Civil War" (2016)
Lang helped out Team Cap in "Civil War," and was in underwater prison for a bit. As mentioned, he and Hawkeye took a deal to be on "house arrest." Like Hawkeye, he isn't in "Infinity War" in any capacity, so we don't know if he's dust or not. Our instinct is pointing to "no," because at least a few more people need to be around to help everyone who's left.