How can I pop specific View Controller in Swift

For Swift 3+

let viewControllers: [UIViewController] = self.navigationController!.viewControllers
for aViewController in viewControllers {
    if aViewController is YourViewController {
        self.navigationController!.popToViewController(aViewController, animated: true)
    }
}

Swift 5

To pop to the latest instance of a specific class, for example SomeViewController:

navigationController?.popToViewController(ofClass: SomeViewController.self)

But you need to add ths UINavigationController extension:

extension UINavigationController {
  func popToViewController(ofClass: AnyClass, animated: Bool = true) {
    if let vc = viewControllers.last(where: { $0.isKind(of: ofClass) }) {
      popToViewController(vc, animated: animated)
    }
  }
}

From Swift 4.0 and Above

for controller in self.navigationController!.viewControllers as Array {
        if controller.isKind(of: DashboardVC.self) {
            _ =  self.navigationController!.popToViewController(controller, animated: true)
            break
        }
    }

This is working Perfect.

Try following code:

for controller in self.navigationController!.viewControllers as Array {
    if controller.isKind(of: ViewController.self) {
        self.navigationController!.popToViewController(controller, animated: true)
        break
    }
}