This worked for me on horizontal collection view.
override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) //Show 14th row as first row self.activityCollectionView?.scrollToItem(at: IndexPath(row: 14, section: 0), at: UICollectionViewScrollPosition.right, animated: true) }
You can choose whether the desired cell at index to be on right or left on scroll position.
UICollectionViewScrollPosition.right or UICollectionViewScrollPosition.left.

**Swift 3:**
This worked for me on horizontal collection view.
override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated)
//Show 14th row as first row self.activityCollectionView?.scrollToItem(at: IndexPath(row: 14, section: 0), at: UICollectionViewScrollPosition.right, animated: true) }

You can choose whether the desired cell at index to be on right or left on scroll position.
UICollectionViewScrollPosition.right or UICollectionViewScrollPosition.left.