German language
Within Europe, German is a recognized minority language in the following countries:

Czech Republic (see also: Germans in the Czech Republic)
Denmark (see also: North Schleswig Germans)
Hungary (see also: Germans of Hungary)
Poland (see also German minority in Poland; German is an auxiliary and co-official language in 31 communes)
Romania (see also: Germans of Romania)
Russia (see also: Germans in Russia)
Slovakia (see also: Carpathian Germans)
In France, the High German varieties of Alsatian and Moselle Franconian are identified as "regional languages", but the European Charter for Regional or Minority Languages of 1998 has not yet been ratified by the government.

Africa: 

Namibia: Namibia also was a colony of the German Empire, from 1884 to 1915. About 30,000 people still speak German as a native tongue today, mostly descendants of German colonial settlers. The period of German colonialism in Namibia also led to the evolution of a Standard German-based pidgin language called "Namibian Black German", which became a second language for parts of the indigenous population. Although it is nearly extinct today, some older Namibians still have some knowledge of it.
German remained a de facto official language of Namibia after the end of German colonial rule alongside English and Afrikaans, and had de jure co-official status from 1984 until its independence from South Africa in 1990. However, the Namibian government perceived Afrikaans and German as symbols of apartheid and colonialism, and decided English would be the sole official language upon independence, stating that it was a "neutral" language as there were virtually no English native speakers in Namibia at that time. German, Afrikaans, and several indigenous languages thus became "national languages" by law, identifying them as elements of the cultural heritage of the nation and ensuring that the state acknowledged and supported their presence in the country.
Today, Namibia is considered to be the only German-speaking country outside of the Sprachraum in Europe. German is used in a wide variety of spheres throughout the country, especially in business, tourism, and public signage, as well as in education, churches (most notably the German-speaking Evangelical Lutheran Church in Namibia (GELK)), other cultural spheres such as music, and media (such as German language radio programs by the Namibian Broadcasting Corporation). The Allgemeine Zeitung is one of the three biggest newspapers in Namibia and the only German-language daily in Africa.

Rest of Africa: An estimated 12,000 people speak German or a German variety as a first language in South Africa, mostly originating from different waves of immigration during the 19th and 20th centuries. One of the largest communities consists of the speakers of "Nataler Deutsch", a variety of Low German concentrated in and around Wartburg. The South African constitution identifies German as a "commonly used" language and the Pan South African Language Board is obligated to promote and ensure respect for it.
Cameroon was a colony of the German Empire from 1884 to 1916. However, German was replaced by French and English, the languages of the two successor colonial powers, after its loss in World War I. Nevertheless since the 21st century, German has become a popular foreign language among pupils and students, with 300,000 people learning or speaking German in Cameroon in 2010 and over 230,000 in 2020. Today Cameroon is one of the African countries outside Namibia with the highest number of people learning German.

North America: In the United States, German is the fifth most spoken language in terms of native and second language speakers after English, Spanish, French, and Chinese (with figures for Cantonese and Mandarin combined), with over 1 million total speakers. In the states of North Dakota and South Dakota, German is the most common language spoken at home after English. As a legacy of significant German immigration to the country, German geographical names can be found throughout the Midwest region, such as New Ulm and Bismarck (North Dakota's state capital), plus many other regions.
A number of German varieties have developed in the country and are still spoken today, such as Pennsylvania Dutch and Texas German.

South America: In Brazil, the largest concentrations of German speakers are in the states of Rio Grande do Sul (where Riograndenser Hunsrückisch developed), Santa Catarina, and Espírito Santo.
German dialects (namely Hunsrik and East Pomeranian) are recognized languages in the following municipalities in Brazil: 

Espírito Santo (statewide cultural language): Domingos Martins, Laranja da Terra, Pancas, Santa Maria de Jetibá, Vila Pavão
Rio Grande do Sul (Riograndenser Hunsrückisch German is a designated cultural language in the state): Santa Maria do Herval, Canguçu
Santa Catarina: Antônio Carlos, Pomerode (standard German recognized)
In Chile, during the 19th and 20th centuries, there was a massive immigration of Germans, Swiss and Austrians. Because of that, two dialects of German emerged, Lagunen-Deutsch and Chiloten-Deutsch. Immigrants even founded prosperous cities and towns. The impact of nineteenth century German immigration to southern Chile was such that Valdivia was for a while a Spanish-German bilingual city with "German signboards and placards alongside the Spanish". Currently, German and its dialects are spoken in many cities, towns and rural areas of southern Chile, such as Valdivia, Osorno, Puerto Montt, Puerto Varas, Frutillar, Nueva Braunau, Castro, Ancud, among many others.
Small concentrations of German-speakers and their descendants are also found in Argentina, Chile, Paraguay, Venezuela, and Bolivia.

Oceania: In Australia, the state of South Australia experienced a pronounced wave of Prussian immigration in the 1840s (particularly from Silesia region). With the prolonged isolation from other German speakers and contact with Australian English, a unique dialect known as Barossa German developed, spoken predominantly in the Barossa Valley near Adelaide. Usage of German sharply declined with the advent of World War I, due to the prevailing anti-German sentiment in the population and related government action. It continued to be used as a first language into the 20th century, but its use is now limited to a few older speakers.
As of the 2013 census, 36,642 people in New Zealand spoke German, mostly descendants of a small wave of 19th century German immigrants, making it the third most spoken European language after English and French and overall the ninth most spoken language.
A German creole named Unserdeutsch was historically spoken in the former German colony of German New Guinea, modern day Papua New Guinea. It is at a high risk of extinction, with only about 100 speakers remaining, and a topic of interest among linguists seeking to revive interest in the language.

As a foreign language: Like English, French, and Spanish, German has become a standard foreign language throughout the world, especially in the Western World. German ranks second on par with French among the best known foreign languages in the European Union (EU) after English, as well as in Russia, and Turkey. In terms of student numbers across all levels of education, German ranks third in the EU (after English and French) and in the United States (after Spanish and French). In British schools, where learning a foreign language is not mandatory, a dramatic decline in entries for German A-Level has been observed. In 2020, approximately 15.4 million people were enrolled in learning German across all levels of education worldwide. This number has decreased from a peak of 20.1 million in 2000. Within the EU, not counting countries where it is an official language, German as a foreign language is most popular in Eastern and Northern Europe, namely the Czech Republic, Croatia, Denmark, the Netherlands, Slovakia, Hungary, Slovenia, Sweden, Poland, and Bosnia and Herzegovina. German was once, and to some extent still is, a lingua franca in those parts of Europe.

German-language media worldwide: A visible sign of the geographical extension of the German language is the German-language media outside the German-speaking countries.
German is the second most commonly used scientific language as well as the third most widely used language on websites after English and Russian.
Deutsche Welle (German pronunciation: [ˈdɔʏtʃə ˈvɛlə]; "German Wave" in German), or DW, is Germany's public international broadcaster. The service is available in 30 languages. DW's satellite television service consists of channels in German, English, Spanish, and Arabic.
German-speaking people living abroad (and people wanting to learn German) can visit the websites of German-language newspapers and TV- and radio stations. The free software MediathekView allows the downloading of videos from the websites of some public German, Austrian, and Swiss TV stations and of the public Franco-German TV network ARTE. With the webpage "onlinetvrecorder.com", it is possible to record programs of many German and some international TV stations.
Note that some material is region-restricted for legal reasons and cannot be accessed from everywhere in the world. Some websites have a paywall or limit the access for free/unregistered users.