丹尼尔·卡希基纳·阿卡卡（英语：Daniel Kahikina Akaka；1924年9月11日－；中文名李硕），美国参议院民主党参议员。他是美国参议院首名夏威夷原住民，也是本届唯一有华裔血统的参议员，祖父母来自中国，而外祖父母则是夏威夷原住民。

阿卡卡于夏威夷檀香山出生，二战期间于美国陆军工兵队服役，于塞班岛及天宁岛提供支持。1952年于夏威夷大学取得教育学学士学位，1956年取得硕士学位。

阿卡卡于1976年当选众议院议员，并于往后七届选举中成功连任。

1990年4月，日裔参议员斯帕克·松永病故，阿卡卡获委任为联邦参议院临时议员，并于5月16日宣誓就职，以替代松永的议席。同年11月正式当选，以完成松永余下的四年任期，而后连任三届 (1994年、2000年、以及2006年)，但于2011年3月宣布将不于2012年的选举中寻求第四次连任。在同为代表夏威夷州的丹尼尔·井上参议员于2012年12月17日逝世后，阿卡卡参议员成为夏威夷州的资深联邦参议员，阿卡卡参议员于2013年1月3日离职。

Daniel Kahikina Akaka (/əˈkɑːkə/; born September 11, 1924) is an American politician who was a United States Senator from Hawaii from 1990 to 2013. A member of the Democratic Party, Akaka was the first U.S. Senator of Native Hawaiian ancestry.

Born in Honolulu, he served in the U.S. Army Corps of Engineers during World War II. He attended the University of Hawaii, where he received his bachelor's and master's degrees. Originally a high school teacher, he went on to serve as a principal for six years. In 1969, he was hired by the Department of Education as a chief program planner. In the 1970s, he served in various governmental positions. He was first elected to the United States House of Representatives in 1976 to represent Hawaii's Second Congressional District, and he served for 13 years. In 1990, he was appointed to the U.S. Senate to succeed the deceased Spark Matsunaga. Akaka would later be re-elected to three full terms. In March 2011, he announced that he would not run for re-election in 2012. After fellow senator Daniel Inouye died on December 17, 2012, Akaka became the state's senior senator, and remained so briefly until he left office on January 3, 2013. He was succeeded by fellow Democrat Mazie Hirono.