Cantonese, and some other nearby languages. Likely others, but Cantonese is the big one.
The loss of the distinction in Cantonese is fairly recent; Chinese terms borrowed from English via Cantonese all obey the distinction, using characters that indicate the correct consonant when read in other varieties of Chinese, and you can find old English-Cantonese dictionaries that talk about how certain Cantonese accents don't make the distinction (implying that "correct" Cantonese of the time still does, which is not the case today).
The loss of the distinction in Cantonese is fairly recent; Chinese terms borrowed from English via Cantonese all obey the distinction, using characters that indicate the correct consonant when read in other varieties of Chinese, and you can find old English-Cantonese dictionaries that talk about how certain Cantonese accents don't make the distinction (implying that "correct" Cantonese of the time still does, which is not the case today).