2009年(nian)2月(yue),在(zai)(zai)日本短池游(you)(you)泳(yong)(yong)公開(kai)賽(sai)中(zhong),張琳(lin)以(yi)1分(fen)43秒(miao)(miao)04獲(huo)得(de)(de)男(nan)(nan)子(zi)200米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)冠(guan)(guan)(guan)軍(jun)(jun),并打(da)破該項目(mu)賽(sai)會紀(ji)(ji)錄。7月(yue),游(you)(you)泳(yong)(yong)世(shi)錦賽(sai)在(zai)(zai)羅(luo)馬進行,在(zai)(zai)男(nan)(nan)子(zi)400米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)決(jue)賽(sai)中(zhong),張琳(lin)以(yi)3分(fen)41秒(miao)(miao)35獲(huo)得(de)(de)一枚銅牌;在(zai)(zai)男(nan)(nan)子(zi)800米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)金牌爭奪戰中(zhong),張琳(lin)以(yi)7分(fen)32秒(miao)(miao)12奪冠(guan)(guan)(guan),打(da)破了澳大(da)利亞選手哈克(ke)特在(zai)(zai)2005年(nian)創造的7分(fen)38秒(miao)(miao)65的世(shi)界紀(ji)(ji)錄,同時也(ye)成為中(zhong)國(guo)(guo)游(you)(you)泳(yong)(yong)歷史(shi)第一個男(nan)(nan)子(zi)項目(mu)世(shi)界冠(guan)(guan)(guan)軍(jun)(jun);在(zai)(zai)男(nan)(nan)子(zi)1500米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)比賽(sai)中(zhong),張琳(lin)獲(huo)得(de)(de)第五名。10月(yue),第十一屆全國(guo)(guo)運動會拉開(kai)帷幕,張琳(lin)以(yi)3分(fen)44秒(miao)(miao)29的成績獲(huo)得(de)(de)男(nan)(nan)子(zi)400米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)冠(guan)(guan)(guan)軍(jun)(jun);在(zai)(zai)男(nan)(nan)子(zi)4×100米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)接力決(jue)賽(sai)中(zhong),張琳(lin)與隊友以(yi)3分(fen)15秒(miao)(miao)50獲(huo)得(de)(de)冠(guan)(guan)(guan)軍(jun)(jun),并打(da)破亞洲(zhou)紀(ji)(ji)錄;隨后(hou)張琳(lin)以(yi)1分(fen)46秒(miao)(miao)12的成績摘得(de)(de)男(nan)(nan)子(zi)200米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)冠(guan)(guan)(guan)軍(jun)(jun),以(yi)15分(fen)03秒(miao)(miao)12的成績獲(huo)得(de)(de)男(nan)(nan)子(zi)1500米(mi)(mi)(mi)自(zi)由(you)(you)(you)泳(yong)(yong)銅牌。