Schlewecke (German pronunciation: [ˈʃleːˌvɛkə]), in Oker dialect: Sleiwecke (Low German pronunciation: [ˈslɛiˌvɛkə]) is a village that forms a part (Stadtteil) of Bad Harzburg in the district of Goslar in Lower Saxony, Germany.

[1] The district is located between Bündheim to the southeast, Göttingerode to the west, Harlingerode to the northwest and Westerode to the northeast.

The suffix Schle- stems from a Proto-Germanic root *slaihwō and cognates to German Schlehe and English Sloe.

The prefix either means "creek" or cognates to English -th, as in "wealth", "strength".

On January 1, 1963, the community of Schlewecke merged with Bündheim to Bündheim-Schlewecke, that again became part of Bad Harzburg on July 1, 1972.