The top 5 easiest songs to learn on the piano for beginners can vary depending on individual preferences and skill levels. However, here are some generally beginner-friendly songs that you might find relatively easy to learn:

"Twinkle, Twinkle, Little Star" - This is a classic nursery rhyme that uses simple melodies and basic hand positions.
"Chopsticks" - A popular and fun piece that can be played using only two notes in each hand.
"Ode to Joy" (from Beethoven's Symphony No. 9) - The main theme of this piece is quite recognizable and can be played with basic hand movements.
"Für Elise" (by Ludwig van Beethoven) - The beginning part of this famous piece is quite approachable for beginners.
"Let It Go" (from Disney's Frozen) - This song has a straightforward melody that can be enjoyable for beginners who are familiar with the tune.

Remember that everyone learns at their own pace, so take your time and practice regularly. Start with simple songs and gradually progress to more challenging pieces as you become more comfortable with the piano. Additionally, using beginner piano books or online tutorials can be helpful in your learning journey. Happy playing!