Whimsical World Collection (Chinese: 異想天開; pinyin: Yi Xiang Tian Kai) is Taiwanese Mandopop artist Rainie Yang's (Chinese: 楊丞琳) first collection album.

It was released on 23 April 2010 by Sony Music Taiwan.

It has two editions : the Deluxe Edition and the pre-order edition of 3 CDs and a DVD with 3 new tracks, 35 previously released tracks and 15 music videos from her five studio albums Ai Mei My Intuition · 2005 Dai Wo Zou Not Yet a Woman · 2008 Li Xiang Qing Ren My Intuition · 2005 Goldfish With Amnesia A Tale of Two Rainie · 2014 Nian Lun Shuo Traces of Time in Love · 2016 Zhi Xiang Ai Ni My Intuition · 2005 The Audience Traces of Time in Love · 2016 Wei Ai Qi Cheng Rainie Yang "Love Voyage" Concert Deluxe Edition · 2013 Ripples A Tale of Two Rainie · 2014 Que Yang My Other Self · 2007 Zuo Bian Meeting Love · 2006 Qing Zhu Meeting Love · 2006