35 or XXXV may refer to:
* 35 (number), the natural number following 34 and preceding 36
* one of the years 35 BC, AD 35, 1935, 2035
* XXXV (album), ''XXXV'' (album), a 2002 album by Fairport Convention
* ''35xxxv'', a 2015 album by One Ok Rock
*35 (song), "35" (song), a 2021 song by New Zealand youth choir Ka Hao
* "Thirty Five", a song by Karma to Burn from the album ''Almost Heathen'', 2001
* III-V, a type of semiconductor material
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