施德楼（STAEDTLER Mars GmbH & Co. KG），是一家德国的文具生产及供应公司，以工程绘图工具见长。

施德楼由J.S. Staedtler在1835年创立，经营多种书写用具，其中包括绘图铅笔、工程笔、专业钢笔及标准木质铅笔，同时也设计并生产橡皮、尺、圆规、软陶等多种绘图用品，1975年起，施德楼进军大中华市场，并在黄竹坑工业区成立香港分公司。

2016年5月9日在湾仔皇后大道东200号利东街地下33号铺开设德国纽伦堡总店以外全球第二间专门店和全亚洲首间专门店

Staedtler Mars GmbH & Co. KG is a German fine writing instrument company and a manufacturer and supplier of writing, artist, and engineering drawing instruments. The firm was founded by J.S. Staedtler in 1835 and produces a large variety of writing instruments, including drafting pencils, propelling pencils, professional pens and standard wooden pencils. It also produces plastic erasers, rulers, compasses and other drawing/writing accessories. Staedtler claims to be the largest European manufacturer of wood-cased pencils, OHP pens, mechanical pencil leads, erasers, and modelling clays. Staedtler has over 20 global subsidiaries and seven manufacturing facilities. Over 85% of the production takes place in the headquarters in Nuremberg, though some of its products are made in Japan. Its "Noris" line of pencils are extremely common in British schools.