Annika Beck (born 16 February 1994 in Gießen) is a German tennis player.
Beck has won two singles titles and one doubles title on the WTA Tour, as well as seven singles titles on the ITF Women's Circuit. On 18 July 2016, she reached her best singles ranking of world No. 37 and on the same date, she peaked at No. 84 in the doubles rankings.
Beck started 2012 ranked world No. 234. She played one ITF tournament in January, one in February, and three in March. She was runner-up in Sunderland and Bath and won in Moscow. In April and May, Beck played higher-level tournaments, but had to play qualifying rounds. She qualified for the main draw in Copenhagen and Prague, achieving the second round of the main draw at the latter. She lost in qualifying at the events in Stuttgart and Estoril, and at the French Open. She did, however, take part in the Junior French Open, defeating Anna Karolína Schmiedlová in the final in three sets.
Beck played in the qualifying rounds of Wimbledon, earning a place in the main draw, but lost in the first round. In July, she played the qualifying rounds at the WTA tournament in Båstad, earning a spot in the main draw. Again, she lost in the first round. She also played two ITF tournaments, winning the $50,000 event in Versmold, and losing in the second round at the $100,000 event in Olomouc. In August, she won a $25,000 tournament in Koksijde, then played in qualifying for the US Open, losing in the first round. In September, she played at the Bell Challenge in Quebec City, with her rank now high enough to earn direct entry into the main draw. In Canada, she won in the first round, but lost in the second. She then went on to win the Aegon GB Pro-Series Shrewsbury on the ITF Circuit. In October, she played two WTA events, but had to play qualifying rounds. She lost in the second round of qualifying at the Generali Ladies Linz, but won through to the main draw at the Luxembourg Open, winning her first-round match but losing to Lucie Hradecká in the second. Back on the ITF Circuit, she won the two $75,000 events in Ismaning and Barnstaple. She ended 2012 with a ranking of world No. 78.
In 2013, Beck reached the quarterfinals of the Shenzhen Open, defeating the 4th seed Hsieh Su-wei in the second round. She then went on to win her first Grand Slam match at the Australian Open, shocking the 28th seed Yaroslava Shvedova in round one before going out to Ayumi Morita of Japan. Beck then played WTA main-tour events, with her ranking now giving direct entry into the main draw. She lost first round in Pattaya City and Memphis, but advanced to the second round in Florianópolis. Beck then played at the Premier tournaments in Indian Wells and Miami, losing in the first round of each. In April, Beck achieved her best WTA International result in Katowice, achieving her first career International-level semifinal, losing to world No. 13 Roberta Vinci. Beck then played the Premier tournament in Stuttgart, losing in the first round to world No. 8 Petra Kvitová.
At the French Open, Beck defeated former world number two Agnieszka Radwańska in the first round in three sets, becoming just the third player to defeat the Pole in the first round of a Grand Slam tournament. In round two, she defeated another Pole in the person of qualifier Paula Kania to reach the third round of a Grand Slam tournament for the first time. After early exits at Wimbledon and the US Open and her first WTA doubles title, Beck won her second WTA singles title at the Coupe Banque Nationale by beating Jelena Ostapenko (who had defeated her in their last meeting) in straight sets.