纳粹党掌权（德语：Machtergreifung，德语发音：.mw-parser-output .IPA{font-family:"Charis SIL","Doulos SIL","Linux Libertine","Segoe UI","Lucida Sans Unicode","Code2000","Gentium","Gentium Alternative","TITUS Cyberbit Basic","Arial Unicode MS","IPAPANNEW","Chrysanthi Unicode","GentiumAlt","Bitstream Vera","Bitstream Cyberbit","Hiragino Kaku Gothic Pro","Lucida Grande",sans-serif;text-decoration:none!important}.mw-parser-output .IPA a:link,.mw-parser-output .IPA a:visited{text-decoration:none!important} 聆听，德文原意为“掌权”）是指1933年1月30日德国威玛共和国政府权力被纳粹党和其民族保守主义盟友掌握。阿道夫·希特勒在这一天向兴登堡总统宣誓成为德国总理，亦标志德国由魏玛共和国时期正式进入第三帝国时期。