Rubuta ci gaba don wannan sakin layi - A gasar Olympics ta 2012 a London, Cielo ya gama na 6 a cikin mita 100 na kyauta
, tare da lokaci na 47.92 seconds. Zinare ya tafi Nathan Adrian (47.52 seconds), sannan James Magnussen (47.53 seconds) da Brent Hayden (47.80 seconds). A alamar mita 50, Cielo yana da rabuwa mafi sauri tare da lokaci na 22.60 seconds. A tseren mita 50, inda Cielo ya kasance wanda aka fi so ya lashe zinare, ya zama na farko a wasan kusa da na karshe, tare da Cullen Jones, tare da lokacin da ya kai dakika 21.54. Amma a wasan karshe, ya gama da lokaci mafi muni fiye da na zagaye na karshe, amma ya sami nasarar lashe lambar yabo ta Olympics ta uku, tagulla, tare da lokacin 21.59 seconds. Wanda ya yi nasara shi ne dan Faransa Florent Manaudou da lokacin da ya kai dakika 21.34. Cielo na Olympic rikodin na 21.30 seconds kafa a 2008 har yanzu gudanar.