Subsidiaries of Registrant Exhibit 21.01 HEIDRICK & STRUGGLES, INC., a Delaware Corporation HEIDRICK & STRUGGLES ASIA-PACIFIC, LTD., an Illinois Corporation HEIDRICK & STRUGGLES JAPAN, LTD., an Illinois Corporation HEIDRICK & STRUGGLES AUSTRALIA, LTD., an Illinois Corporation HEIDRICK & STRUGGLES HONG KONG, LTD., an Illinois Corporation HEIDRICK & STRUGGLES SINGAPORE PTE LTD, a Singapore Corporation HEIDRICK & STRUGGLES (INDIA) PRIVATE LIMITED, an Indian Corporation HEIDRICK & STRUGGLES (KOREA), INC., a Korean Corporation HEIDRICK & STRUGGLES FAR EAST LIMITED (Hong Kong) HEIDRICK & STRUGGLES TAIWAN LIMITED HEIDRICK & STRUGGLES CANADA, INC., a Canadian Corporation HEIDRICK & STRUGGLES ARGENTINA, S.A., an Argentine Corporation HEIDRICK & STRUGGLES LATIN AMERICA, INC., an Illinois Corporation HEIDRICK & STRUGGLES DE CHILE LIMITADA, a Chilean Limitada HEIDRICK & STRUGGLES DEL PERU S.A., a Peruvian Corporation HEIDRICK & STRUGGLES, S.A., a Venezuelan Corporation HEIDRICK & STRUGGLES HOLDING DO BRASIL LTDA, a Brazilian Limitada HEIDRICK & STRUGGLES DO BRASIL LTDA., a Brazilian Limitada HEIDRICK & STRUGGLES, S.A. de C.V., a Mexican Corporation HEIDRICK & STRUGGLES ESPANA, INC., an Illinois Corporation HEIDRICK & STRUGGLES AB, a Swedish Corporation HEIDRICK & STRUGGLES AS, a Norwegian Corporation HEIDRICK & STRUGGLES OY, a Finnish Corporation STAHLBERG & PARTNER OY, a Finnish Corporation JUHA-PEKKA AHTIKARI OY, a Finnish Corporation KOIK & PARTNER OU, an Estonian Corporation KOIK & PARTNER SIA, a Latvian Corporation HEIDRICK & STRUGGLES INTERNATIONAL SRL, an Italian Corporation HEIDRICK & STRUGGLES Sp.zo.o, a Polish Corporation HEIDRICK & STRUGGLES CONSULTING AG, a Swiss Corporation HEIDRICK & STRUGGLES s.r.o., a Czech Corporation HEIDRICK & STRUGGLES BV, a Netherlands limited liability corporation HEIDRICK & STRUGGLES CONSULTORES de GESTAO Lda, a Portugese Corporation HEIDRICK & STRUGGLES UNTERNEHMENSBERATUNG GmbH & Co. KG, a German limited partnership PROTEM GmbH, a German limited liability corporation JMA-JMP ANZEIGENANGENTUR GmbH, a German limited liability corporation HEIDRICK & STRUGGLES UNTERNEHMENSBERATUNG VERWALTUNG-Gmbh, a German limited liability company HEIDRICK & STRUGGLES LTD., an Israeli Corporation LEADERSONLINE, INC. a Delaware Corporation HEIDRICK & STRUGGLES (Proprietary) LIMITED, a South African Limited Company. HEIDRICK & STRUGGLES UNTERNEHMENSBERATUNG, GmbH., an Austrian Corporation