I'm assuming you know their user (profile) name. Right now Ask does not have searching capabilities, other than randomly searching the questions looking for them. The best way is to "follow" the person once you find them. . The other way to search for someone is to do a Google search using their profile name. Type in their profile name....leave a space....then type in ask......leave a space..... Then type in community. Example: Joblo ask community Their Ask profile will show up among other links. Tap into it. I believe there is also an option to answer one of their questions. Answer one of their questions if you're able. Can't in the App. If nothing else, you can view their recent answers (and the category it's in) and find them that way. I've done it myself a couple of times. This is about the only way of searching for someone on Ask right now.