The Slovaks (Slováci in Slovak, slovaci in Romanian) are an ethnic minority in Romania, numbering 17,199 people according to the 2002 census and hence making up 0.1% of the total population. Slovaks mainly live in western Romania, with the largest populations found in Bihor and Arad counties, where they make up 1.22% and 1.25% of the population, respectively.

The largest concentrations of ethnic Slovaks can be found in Șinteu (Nová Huta), Bihor County, where they make up nearly all (96.37%) of the population, and in Nădlac (Nadlak), Arad County, where they make up almost half (43.85%) of the population. Other towns and communes with significant Slovak populations include:

• Arad County
  • Peregu Mare (Slovak: Veľký Pereg) — 12.87%
  • Olari — 4.07%
  • Sintea Mare — 4.94%
  • Fântânele — 3.36%
  • Vinga — 2.45%
• Bihor County
  • Derna — 19.22%
  • Suplacu de Barcău (Slovak: Siplak) — 18.41%
  • Popești (Slovak: Popešť) — 12.93%
  • Mădăras (Slovak: Madaras) — 7.03%
  • Aleșd (Slovak: Alešď) — 6.18%
  • Lugașu de Jos (Slovak: Lugaše) — 6.28%
  • Aușeu (Slovak: Aušeu) — 5.63%
  • Brusturi — 4.64%
  • Aștileu — 4.35%
  • Sârbi — 2.68%
• Caraș-Severin County
  • Berzovia — 1.69%
• Satu Mare County
  • Certeze — 1.57%
• Sălaj County
  • Plopiș (Slovak: Plopiš) — 32.01%
  • Sâg — 2.99%
  • Ip — 2.49%
  • Marca — 1.92%
  • Halmășd — 1.25%
• Timiș County
  • Brestovăț — 15.13%
  • Chevereșu Mare — 4.44%
  • Topolovățu Mare — 2.48%
  • Tormac — 1.17%
  • Comloșu Mare — 1.07%

As an officially recognized ethnic minority, Slovaks, together with Czechs, have one seat reserved in the Romanian Chamber of Deputies.