Blankenberg may refer to:

• Blankenberg, Mecklenburg-Vorpommern, part of the Amt Sternberger Seenlandschaft, district of Parchim, Mecklenburg-Vorpommern, Germany
• Blankenberg, Thuringia, part of the Verwaltungsgemeinschaft Saale-Rennsteig, Saale-Orla-Kreis, Thuringia, Germany
• Blankenberg, North Rhine-Westphalia, near Siegburg, part of Hennef (Sieg)
• Ngaire Blankenberg (born 1971/72), a South African-Canadian museum director

• Blankenberge, Belgian town
• Blankenburg (disambiguation)