Mertens
Mertens (Dutch pronunciation: [ˈmɛrtə(n)s]) is a surname of Flemish origin, meaning "son of Merten" (Martin). It is the fifth most common name in Belgium with 18,518 people in 2008.
Geographical distribution
    
As of 2014, 43.4% of all known bearers of the surname Mertens were residents of Germany (frequency 1:2,728), 34.8% of Belgium (1:487), 8.8% of the United States (1:60,847), 5.9% of the Netherlands (1:4,188), 1.7% of France (1:57,632) and 1.0% of Brazil (1:299,871).
In Belgium, the frequency of the surname was higher than national average (1:487) only in one region: Flemish Region (1:367).
In Germany, the frequency of the surname was higher than national average (1:2,728) in the following regions:
- 1. North Rhine-Westphalia (1:970)
 - 2. Saxony-Anhalt (1:1,361)
 
In the Netherlands, the frequency of the surname was higher than national average (1:4,188) in the following provinces:.[1]
- 1. Limburg (1:959)
 - 2. North Brabant (1:2,002)
 
Noble House of Mertens de Wilmars
    

- Charles Mertens de Wilmars (1921–1994), Belgian psychiatrist
 - Josse Mertens de Wilmars (1912–2002), Belgian jurist
 
Others
    
    C
    
- Charles Mertens (1862–1919), Belgian painter, printmaker and illustrator
 - Claas Mertens (born 1992), German rower
 - Conner Mertens (born ca. 1994), American football player
 
D
    
- Dries Mertens (born 1987), Belgian footballer
 - Dylan Mertens (born 1995), Dutch footballer
 
E
    
- Elise Mertens (born 1995), Belgian tennis player
 - Els Mertens (born 1966), Belgian racing cyclist
 - Ewald Mertens (1909–1965), German middle-distance runner
 
F
    
- Frank Mertens (born 1961), German keyboardist and composer
 - Franz Mertens (1840–1927), German mathematician
 - Franz Carl Mertens (1764–1831), German botanist
 
G
    
- Gregory Mertens (1991–2015), Belgian footballer
 
H
    
- Helmut Mertens (1917–1984), German fighter ace
 
J
    
- Jan Mertens the Younger (died ca. 1527), South Netherlandish painter
 - Jan Mertens (1904–1964), Belgian cyclist.
 - Jan Mertens (1916–2000), Dutch politician
 - Jan Mertens (born 1995), Belgian footballer
 - Jean-François Mertens (1946–2012), Belgian game theorist known
 - Jerry Mertens (born 1936), American football cornerback
 - Jim Mertens (born 1947), American football player
 - John J. Mertens (1869 – >1924), South Dakota politician
 - Joseph Mertens (1921–2007), Belgian archaeologist
 
K
    
- Karl Heinrich Mertens (1796–1830), German botanist and naturalist
 - Klaus Mertens (born 1949), German bass singer
 - Klaus Mertens (born 1950), German artist
 
L
    
- Lennart Mertens (born 1992), Belgian footballer
 - Linda Mertens (born 1978), Belgian singer
 - Lothar Mertens (1959–2006), German historian
 
M
    
- Michael Mertens (born 1965), German shot putter
 
P
    
- Peter Mertens (born 1969), Belgian author and politician
 - Pierre Mertens (born 1939), Belgian writer
 - Pieter Mertens (born 1980), Belgian road bicycle racer
 - Peter Mertens (born 1944) Canadian politician
 
R
    
- René Mertens (1922–2014), Belgian racing cyclist
 - Robert Mertens (1894–1975), German herpetologist
 
S
    
- Sibylle Mertens-Schaaffhausen (1797–1857), German art collector and musician
 - Stéphane Mertens (born 1959), Belgian motorcycle road racer
 
T
    
- Thomas Mertens (fl. 1666–1669, Flemish still life painter
 - Tim Mertens (born 1986), Belgian racing cyclist
 
W
    
- W. Mertens (fl. 1650–1675), Flemish still life painter
 - Wim Mertens (born 1953), Belgian musician
 
Y
    
- Yannick Mertens (born 1987), Belgian tennis player
 
Z
    
- Zenia Mertens (born 2001), Belgian footballer
 
Fictional characters
    
- Finn Mertens, main protagonist of the American animated television series Adventure Time
 - Martin Mertens, a character who is Finn’s Father in the American animated television series Adventure Time
 - Mertens, the protagonist of the 1998 PlayStation video game Colony Wars: Vengeance