Aleh is a transliteration from Belarusian Алег of the Eastern Slavic name Oleg. It is sometimes spelled as "Aleg". Notable people with the name include:
Surname
Jo Aleh (born 1986), New Zealand sailor, national champion, world champion, Olympic champion
Given name
Aleh Ahiyevich (born 1993), Belarusian racing cyclist
Aleh Akhrem (born 1983), Belarusian volleyball coach and player
Aleh Astrashapkin (born 1992), Belarusian handball player
Aleh Byabenin (c. 1974–2010), Belarusian journalist
Aleh Chakunkov, Belarusian diplomat
Aleh Charnyawski (born 1970), Belarusian footballer
Aleh Kavalyow (born 1987), Belarusian footballer
Aleh Loban (born 1985), Belarusian weightlifter
Aleh Lukashevich (born 1972), Belarusian journalist, television presenter, director and photographer Aleh Mikhalovich (born 1979), Belarusian Greco-Roman wrestler Aleh Patotski (born 1991), Belarusian football player Aleh Popel (born 1983), Belarusian footballer Aleh Shkabara (born 1983), Belarusian footballer Aleh Slautin (born 1986), Ukrainian-Belarusian football player Aleh Tsyvinski (born 1977), Belarusian-American economist Aleh Veratsila (born 1988), Belarusian footballer Aleh Yurenia (born 1990), Belarusian sprint canoeist