Thanksgivukkah is a holiday name portmanteau neologism given to the convergence of the American holiday of Thanksgiving and the first day of the Jewish holiday of Hanukkah on Thursday, November 28, 2013. It was the result of a rare coincidence between the lunisolar Hebrew calendar and the Gregorian calendar. Because the calendars are not calculated the same way, Hanukkah appears from year to year on different dates on the Gregorian calendar, ranging from late November to early January.

Chrismukkah is a pop-culture portmanteau neologism referring to the merging of the holidays of Christianity's Christmas and Judaism's Hanukkah. It first arose in the German-speaking countries within middle-class Jews of the 19th century. After World War II, Chrismukkah became particularly popular in the United States, but is also celebrated in other countries.