kith and kin

English

From Middle English kith and kynne. Literally, friends (“kith”) and family (“kin”).

kith and kin pl (plural only)

Both friends and family.
- 1887, A[rthur] Conan Doyle, “A Study in Scarlet”, in Beeton’s Christmas Annual, London; New York, N.Y.: Ward, Lock & Co., part I (Being a reprint from the reminiscences of John H. Watson, M.D., […]), chapter I (Mr. Sherlock Holmes), page 2:
  I had neither kith nor kin in England, and was therefore as free as air—or as free as an income of eleven shillings and sixpence a day will permit a man to be.
- 1916, Baroness Orczy, Leatherface: A Tale of Old Flanders‎^[1]:
  Surely all those abominable rebels must see that their obstinacy and treachery redounds upon their own kith and kin.

both friends and family

Arabic: آل (ar) (ʔāl) (this may or may not include friends; if friends to be specifically added then use "الصحب والآل". Note this is the old Arabic equivalence to Kith and Kin, for modern formal usage "الأصدقاء والأقارب" is typically used),
Armenian: ազգուտակ (hy) (azgutak) (does not include friends)
Bengali: কুটুম খেশ (bn) (kuṭum kheś)
Chinese:
Cantonese: 親朋戚友 / 亲朋戚友 (can¹ pang⁴ cik¹ jau⁵)

Mandarin: 親友 / 亲友 (zh) (qīnyǒu), 親朋好友 / 亲朋好友 (zh) (qīnpénghǎoyǒu)
Danish: slægt og venner
Dutch: bloed- en zielverwanten pl
Finnish: perhe ja ystävät
Galician: achegados m pl, familiares e amigos m pl, íntimos m pl
German: Freunde und Familie pl
Hungarian: hozzátartozók (this may or may not include friends; if not, "és barátok" can be added), barátok és rokonság, pereputty (hu), retyerutya (hu)
Manx: caarjyn as mooinjer pl
Middle English: kith and kynne
Polish: krewni i znajomi vir pl
Russian: родны́е и бли́зкие (rodnýje i blízkije)
Spanish: parientes y amigos, allegados m pl
Swedish: släkt och vänner c pl, nära och kära (sv)
Yiddish: קינד־און־קייט n pl (kind-un-keyt)